Cash Vs Tourney
I found that cash = math, MTT=survival
Simply put, you can make a bad call in cash becasue of the odds
. If you lose xx times, you lose xx dollars, but if the times you will make it are greater, you will make more money in the long run. (lose 3 times for a total of 100, win twice for a total of 200, so it actually pays to make the bad call) That's why you have to have a bankroll so much larger, so you can get to those times you will make it. It's based on a timescale.
MTT's however, you cannot afford to make those kind of calls, or you will be out of chips, and you cannot get more (usually). You must survive into the pays to get ANY money. And you hope and pray you run into a cash game guy who forgets this, and makes a call that is math correct in cash, horribly risky in a MTT.
On the other hand are rebuys. Some will jam all in everyhand hoping to chip up, but they often rebuy for far more than they actually can win! "Ha! I won $65.00, and it only cost me a hundred!"
Hope this insight helps.