hmm, realistic or different ?
the FM's are different most certainly, WB 2.77 is closest to AH in my opinion, 2.77 and WB III are different (again IMO).
There is a certain mushyness (is that a word ?) in WB III, but ...... I am led to believe that adjusting your stick scalings does a lot to reduce or even get rid of this effect.
I played WB 2 for many years, the only reason I changed to AH was for the numbers, I still keep an account in WB for events etc which are well run and enjoyable (so are the AH ones)
It's a personal thing I guess ........
wipass