General question for you buys about BB/hour rate

[Bigwig]

I'm sure this question has been asked 1000 times before, but humor me. I'm a NL tourney player, and a limit cash game player, so my experience in NL cash games is limited.

What would a very good player expect to make per hour in the following limits in a live game?

1/2
2/5
5/10

This is to settle a debate in another non-poker forum, where some dude thinks he can make a seemingly unrealistic amount. Thanks in advance.