The P-47 was without a doubt the toughest, most reliable, single engine fighter of WWII. Some may argue that the F4U and the IL2 may be, and no doubt, they are in the same category.
As far as AH goes, I think the jugs relative toughness in comparison to other AH AC is right on the money. I do however think that the damage model in AH could be improved on.
PS..there aint nuthin wrong with 50 cal performance in AH.