I think that the underhand in Ostfront is the most realistic one, but the distance could still be increased a little
If they make same underarm throw in RO2 with slightly increased power it would be perfect.
BTW am I the only one who think the "normal" grenade throw in RO2 is too weak, and you have to wait long to throw the grenade farther?
I mean its kinda stupi you have to hold the grnade for 5-6 seconds in order to throw it where you want ? May be this feature can be removed and the throw power will be increased by some other way (may be if you swing the mouse fast up or down, or even use mouse buton to increase distance or add spin to grenade so that it rolls far away on the ground or so that it stops on the exact place where you want it.
Modern grenades like flashbangs are made
hexagon and
octagon so that they wont roll on the ground. *may be you have wondered why they are shaped like that?*
Military grenades are made round so that they roll
I mean every grenade has its own purpose and features that should be used for example in Soviet(lately russian) army all the years during cold war and after that the grenades were 2 types- attack and defence types. Defence had longer time "fuse" and held a HUGE power. Attacking grenade had less power so you could throw it and advance....
Germans added handle for easier throw (although I doubt it will fly further just because of the handle) but that makes the grenade harder to get in windows and bunkers from distance