@WrathOfHades85you mean, this is the case if you do a usered scramble with your QB and the AI defender forces the fumble? agree! I don't play with Lamar or Vick, but the ratio of strip sacks to sacks is huge (e.g. for my QB Joe Montana in MUT or Jimmy G in offline franchise). I pretty much don't concede sacks against the AI, but I would guess that at least 1 out of 3 sacks results in a fumble.
but if I try to strip the ball or do a successful hit stick on an AI Lamar while he scrambles, it's almost impossible to force a fumble. I can only remember one time where I forced Kyler Murray to fumble with a hit stick.... but Lamar or Vick? never.