Winning Sessions %

[imitation]

My winning sessions % is at around 50% infact on some of my DB its well under 50% although I might be winning at a decent rate anyone care to comment if this is something to be concerned with. I don't know what to put it down to...I do table hop a bit but I can't imagine this would effect it too much? For example of my small return to 5/10SH (only 2k hands) i'm at 2.31BB/100 however i've only had 42.22% winning sessions or at party 1/2 I had 20k hands logged with 4BB/100 WR with <50% winning sessions.