The feedback is much appreciated.

I've heard a lot of decent players say that there's essentially no difference between 10NL and 5NL, and that if I make 17BB/100 at 5, then I should make at least 15 at 10NL playing exactly the same way. But the thing is, decent players play much higher levels than this, and so probably haven't played all that many hands at my level (or if they have it may be so long ago that things have changed) - to them, over a small amount of hands, it may seem the same. Is this the case with you? Are you mainly a higher level player who's merely glanced at 10NL, or have you got a lot of experience here? To me, they seem a hell of a lot different. People are check raising my c-bets, and floating me a hell of a lot. People are double barreling more, and folding a lot less to my bluffs.

Am I loosing because I think it's different but it isn't? Or am I loosing because it *is* different, and I just haven't found my feet yet?