sometimes i have games where i miss 5-6 deep balls to wide open receivers with 99 speed. there are some drives when i miss the first one, then the next 3 plays, i will run four verts and just throw it deep every play to test my theory that sometimes the game decides you cant complete deep passes. there are some possesions where the computer makes our qb overtrhow everything, even slants and there is not stopping it, it is the computer deciding they are going to take your qb's accuracy to 0.
my favorite is the game allowing a qb with 985-90 arm strength to throw a ball 80 yards in the air to purposely overthrow a wide pen 99 speed receiver. i have tested this theory over and over and it never fails. if on a drive you notice one of those terrible terrible throws for no reason, dedicate the next 3 plays to running money, ai abusing plays...deep balls, 4 verts, etc. you will overthrow them eery single time until the possession is over.