I know, I was surprised by the differences in variance between the two sites too, as I was sure I felt more variance at Tribeca but i think since a LOT of beats were to short-stacks, it doesn't show much and therefore the actual monetary variance is lower, even if the amount of beats is higher, if that makes sense.
So far the variance seems lower at NL50, but I really don't have enough hands to say anything accurately, although I HAVE noticed a difference in the players, they seem a lot more donkish here and willing to go all-in preflop with AK or AT even, as well as calling pot size bets with flush draws which you just don't see much of at NL100. (not as much of, at least)
Here's a graph of my time at NL50, for what it's worth:
I saw that thread on 50% winnings and it looks very interesting, I will certainly check it out if i lose my soul to the variance devil again.
How's Bodog treating you btw? I've heard the players are terrible but the variance is still low, however i've thus far been hesitant to deposit because i've heard a lot of bad things about the software and when I play on bad software, my play goes down the drain. That's why I can't win at Prima (i believe), i find their software to be a joke and I just can't take it seriously.