$5/10 nl is a transition limit, its a tricky game with its own little nuances inherent to only this level, ... I guess in a way all poker game levels could be considered "transition".
However the 5/10 nl game is the tipping point between capped games and non-capped games. Some 5/10 games are capped, some are not. You fall down to 2/5 and nearly ALL of the games are capped, jump up to 10/20 and ALL are non-capped games.
A couple of common issues are a smaller player pool, and a more diverse field -players coming up from capped games, and more advanced higher limit players playing this smaller stakes game. More often than not once a player reaches a point where he/she is playing a lot 5/10, they're also playing other games at different levels. And once you weigh the tipping point past 5/10 into ALL non-capped games no one has a win rate per hour, its imposible ...because it all depends on what game they're playing. IMO "win rates" are only applicable to get a general pulse on lower stakes games.
And FWIW, there isn't a real poker player that I know of that can't see though internet "posters" living the poker player lifestyle vicariously via the web....ok, off my high-horse