>>544734493
They are underperforming against air targets and overperforming against ground.
A couple of updates ago, gaijin broke cannons against planes again and they were doing literally no damage. They upped the fragmentation by 500% as a band aid solution, they didn't really resolved it against air targets since every cannon either 50% sparks or 50% literally implodes the enemy plane, but in ground now every plane autocannon that pens a tank does the fragmentation of a literal 150mm aphe.
You can even test this in the damage simulator because there are planes and tanks that sahre the same cannon and projectile, but the results are extremly different