Other people have many of the same issues you mentioned with the AMX A-1A: AMX A-1A at 11.3 is DOA
Which is sad, because I was really considering buying it this sale. But it appears that it really does need to come down in BR, maybe even 2 or 3 notches. And/or have its IR missiles fixed, as it sounds like there is a real glitch/issue between their stat card performance and in game performance.