Tankbusting 101 - Weapon comparison - BS4

For the last couple of weeks I have been quite busy not getting around to writing anything more on the chaos book.  It seems anything I can do to avoid writing I seem to do instead. 

What I thought I would do instead is write an updated 6th edition anti tank capability comparison between various weapons in both Space Marine and Imperial Guard lists including as many of the different types of guns as I could think of, seeing how bs 3 and 4 affect the various weapons and equally importantly looking at how the changes to how AP affects armour harms your chances of a kill. 

Firstly lets look at common anti tank weapons available to marines using BS4 adjusted for 6th edition AP values, bearing in mind anything with ap 3+ is actually 50% worse at tank killing now;

ML                                Chance of Glance        Chance of Pen          Chance of kill

VS AV 10                              11.11%                    44.44%                7.41%

VS AV 11                              11.11%                    33.33%                5.56%

VS AV 12                              11.11%                    22.22%                3.70%

VS AV 13                              11.11%                    11.11%                 1.85%

VS AV 14                              11.11%                           0%                       0%

Lascannon                     Chance of Glance        Chance of Pen          Chance of kill

VS AV 10                              11.11%                    55.55%                 18.52%

VS AV 11                              11.11%                    44.89%                 14.81%

VS AV 12                              11.11%                    33.50%                 11.05%

VS AV 13                              11.11%                    22.11%                  7.30%

VS AV 14                              11.11%                    10.72%                  3.54%

TL Lascannon                 Chance of Glance        Chance of Pen          Chance of kill

VS AV 10                              13.88%                    69.44%                 23.15%

VS AV 11                              13.88%                    55.55%                 18.52%

VS AV 12                              13.88%                    41.67%                 13.88%

VS AV 13                              13.88%                    27.76%                  9.25%

VS AV 14                              13.88%                    13.88%                  4.44%

Autocannon*                    Chance of Glance     Chance of Pen          Chance of kill

VS AV 10                              11.11%                    33.33%                   5.56%

VS AV 11                             11.11%                    22.22%                    3.70%

VS AV 12                             11.11%                    11.11%                    1.85%

VS AV 13                             11.11%                           0%                       0%

VS AV 14                                   0%                           0%                        0%

TL Autocannon*             Chance of Glance        Chance of Pen          Chance of kill

VS AV 10                              13.88%                    41.67%                   6.67%

VS AV 11                              13.88%                    27.76%                   4.63%

VS AV 12                              13.88%                    13.88%                   2.22%

VS AV 13                              13.88%                           0%                      0%

VS AV 14                                      0%                          0%                      0%

 Assault Cannon**           Chance of Glance        Chance of Pen          Chance of kill
 VS AV 10                              11.11%                    22.22%                   3.70%
 VS AV 11                              11.11%                    11.11%                    1.85%
 VS AV 12                                    0%                    11.11%                    3.70%
 VS AV 13                                3.70%                      7.41%                   2.46%
 VS AV 14                                3.70%                      3.70%                   1.23%

 TL Assault Cannon**      Chance of Glance        Chance of Pen          Chance of kill
 VS AV 10                              13.88%                     27.39%                  4.57%
 VS AV 11                               13.88%                    13.28%                   2.21%
 VS AV 12                                      0%                    13.28%                  6.64%
 VS AV 13                                4.43%                      8.86%                   2.93%

 VS AV 14                                4.43%                      4.43%                   1.48%

Melta under half range   Chance of Glance        Chance of Pen          Chance of kill

 VS AV 10                               1.83%                     64.84%                  33.03%

 VS AV 11                               3.66%                     61.17%                  31.20%

 VS AV 12                               5.49%                     55.68%                  28.76%

 VS AV 13                               7.32%                     48.36%                  25.40%

 VS AV 14                               9.15%                     39.21%                  21.14%

Melta over half range      Chance of Glance        Chance of Pen          Chance of kill

 VS AV 10                               11.11%                    44.44%                  24.07%

 VS AV 11                               11.11%                    33.33%                  18.55%

 VS AV 12                               11.11%                   22.22%                   12.96%

 VS AV 13                               11.11%                    11.11%                   7.41%

 VS AV 14                               11.11%                          0%                   1.85%

* has two shots, this is a per shot comparison, so you get two chances of this

** has four shots, this is a per shot comparison, so you get four chances of this