Me? I'm in the middle, sometimes lucky other times my crictical hits are useless...
NEVAR. The only times I get critical hits are on Pokémon I want to catch. >.>
Pretty unlucky. The opponent gets CRs at least 30 times more often than I do, and whenever I get them in the wild, it kills whatever I was trying to catch.
But that goes for most people anyway.
I have stupid luck with them, really. In my most recent playthrough of BW, I had a Super Luck Tranquill with Air Cutter, holding a Scope Lens, and still had a hard time getting critical hits. I mean, like, what the heck?