Different probabilities on different sites?

[77rules]

I know this sounds like a _really_ dumb question, but are there differences between sites? I've been a consistent winner on Paradise for over a year now, but whenever I go somewhere else I lose. I've tried Pacific, Party and Betson and I can't seem to win there. I seem to do OK on Pokerstars, but the jury is still out on that site.

It just seems like there's a different "feel" to Paradise. Not as many bad beats, the stretches of cold cards aren't as deep or as long, et c.

Anybody else have the same experience?