I could be wrong, but I think a lot of guys sustain between 8 and 12 ptBB/100.

It would obviously differ at different levels. Someone mentioned that you should be very happy not to be a loser, and that's true also.

I'm about 8.5ptBB/100 over my last 10K hands. 12ptBB/100 over my last 3k.

So it varies a lot, and you'll run nice and hot sometimes.

I'm not good enough to crush "high limits" (although those mentioned aren't really considered big limits), but at the really low limits you can average stats like that just camping hands. Doesn't take much.