One side will always be advancing 715, AlWAYS. Two sides probably won't be advancing at the same time on the same spot. Getting in on eachothers flanks, yes, but not on the same line of advance. PANZERS would have an advantage over the T-34/85 if they were playing defense, its just the nature of the game.
And yes, either my sights are screwed up, or most of my engagments are at under 1200 yds. That either says I'm extremely lucky, or that I make better use of terrain and am able to advance to extreme close range much better than you are.
I'm not saying that I don't have a good number of engagments at long(ish) range, just that the numer of long range engagments is relativly low. Take those two tigers in my earlier post: We were both advancing, I ducked behind a burm and was able to kill an M4A3(76)W without being spotted, drive up behind those two tigers, and kill both of them without being seen. I then killed a firefly at 1600yds before a T-34/85 I didn't see killed me.
GV'ing comes down to 3 things IMO.
Use of cover and concelment: Hitting him from the rear at 500yds takes his gun out of the equation.
Gunnery: the penetration qualities of your gun matter VERY little of you can't aim it.
Use of terrain and movment: Fight from the high ground, and move in on the enemy's flanks and rear.
In order of importance of course.