You can do whatever you want obviously, but when people talk about win-rates, they don't include bonuses or rake back. You can and should include all of that in your HOURLY rate, though, and let the cards fall where they may. If you are a slight loser in $1000NL but the massive rakeback and bonuses make you more than your 1ptbb/100 at $600NL in this hypothetical example, stay @ $1000NL if money motivates you.