I typically do pretty well at the casinos.
And I typically lose my arse online. one night in a big tourney I lost with a straight flush(to a bigger one), an Ace high tight (to 4 deuces) and an Ace high flush (to a straight flush). This happened in one tourney!
IMO there are too many huge hands online for it to be real.
At least at the casino I would have picked off a huge "bad beat" pot. Instead I got to put my fist threw my monitor.