I'm meaning big bet, not big blind. The bet could be $100 or more in 1/2 NL, as opposed to the blinds in a limit game. It's a terminology issue,IMO. I think players talk of winning some many big bets an hour ( maybe 2, in a limit game), not the big blind size, say a 5/10 limit game... if you win $20 per hour at that... you are doing great.
i actually think they talk about winning x number of big blinds per hour .