Euronymous is mostly right saying that skills and experience can make a big difference and most players ( myself included ) don't have enough experience.
For example, I got a walkover vs rudzian but he insisted to play in order to see the possible outcome. In his PvP gear he did no damage and died in 2 skorn shots, in his dps gear he did some damage and died in 2 spear shots... he was kinda bm saying that without wotb I would have no chance etc...
BUT, it was mostly because of what he did during my wotb.
Insane just circles a rock without hitting me for 15 sec, and with my usual build I couldn't get more than 3 hotas of which max 2 were crits.
Rudzian ran pretty much in a straight line.. he even tried to kite... with haunt. Basically he gave me full fury again and made it easy for me to catch and 2 shot him with increased crit chance hota from full fury. He doesn't have enough dps, but if insane did that it would have been a much different result.
As Euro said, the problem is lack of top players to test with... if vs all wds I know charge worked I thought that this is the way, no need to test more
Another example is tank dh using rf and camp mode vs barbs... it may work in public games but u will not be able to kill a decent barb, barbs can just go skorn wotb, run, ip if necessary and run out, u can't prevent them from regen if they fail with first wotb and eventually u will die...
I bet in all match-ups there are small things or unused skills that can probably turn the result upside down, too bad the PvP scene is small, almost nobody streams and few people communicate builds.