You also think that said single ability makes the entire faction op? Lol I shall post it here as well.
If you truely think so, then we should see timers with molotovs and soviet/usf anti tank grenades as well. 
uh, no.
i said (implied) that the fact that it was a very strong grenade available on OKH's basic infantry unit from the beginning of the game means that it has a strong effect throughout the game which gives it the possibility of a bigger effect then something that comes later.
just to be stupidly clear here, a VI B that is available 60 seconds into the game is a lot more powerful then one that requires OKW to have built all of their buildings at least once.