Yeah you can not bunny hop like a rabbit like you can in Call of Duty, but even in Battlefield they are pretty close on the jumping then ARMA 3. The fact is BiS has yet to come up with a better solution then this "V" key. If they just did what Battlefield 3 does for climing, and vaulting over small objects and do away with this "V" crap they would solve one of the biggest issues for most people that played ARMA games.
You think thats not okay, or unrealistic? You need to get your head checked because it is very much real, and it is not that hard to do.