Is it just me or is the GBU-39 just weaker than it should be?

tries to kill T-80U’s in nuclear escalation game mode using A-10C. and aims for/on a T-80U. bombs 75% of the time land next to it/on it and only kills track or some other module. it’s a 250 lb bomb with GPS guidance. also i find it Weird that it doesn’t land in a closer cone/area you aimed at. like it refuses to go anywhere but exactly where you aimed. also “tested” it for a minute to find that out.