Tbf, he (Sargon) is one of the few cav guys that fights cav and infantry head on at all. Used to call me a cheater when I killed him though
But yeah, cav wasn't really nerfed, it was just removed mostly. It's still strong, but requires builds that devs didn't let us respec to. I haven't played 1H cav since the patch broke my lvl34 char and I can't trade my large warhorse to a barded one, so I'm playing 2H/Pole mostly now. The only real difference for cav since the failpatch is that horse archers can take them down easier, while riding on a horse that can't be shot down by almost any ranged. Anyone with more than one brain cell would have known this was a problem, but apparently NA balancers don't know or care about the HA/archer problem we have on EU.
Grellenort abuses heavy armor and a great lance. Also he's mediocre at best as a shielder, though it might be the ping that causes him trouble. He can top the scoreboards for two reasons, Great Lance is lame and OP and the average awareness of a crpg player is non-existant.