Originally Posted by Roberto4063
Really? how so? This is new to me
Cash=lots of post-flop action (playing multiple OOP increases the disadvantage) and building a big pot pre-flop allows you to cut the hand short getting stacks in on the flop or turn. Getting stacks in early also favours one pair type hands which is basically all of your EP range.
Your range is also stronger and bigger preflop raise sizes dramatically increase the pot size post-flop, this is the main reason for raising more in EP, it allows you to play bigger pots with bigger hands.
Tournaments, I'm sure someone else can cover this better than I can but the basics of it are that you're relying on fold equity a lot more and since your range is stronger in EP you can get away with a smaller raise (which means it doesn't need to work as often) and you still get a lot of fold equity. Note that this doesn't work in cash because implied odds
are so good for the guy in position if you raise small this is partly because stacks are deeper and partly because the other guy can rebuy where in a tournament he'd risk often crippling his stack doing goofy stuff with SCers and similar here.
As for raising more on the button, to be honest I don't get that one, but it's Chris Ferguson who seems to most strongly advocate this method so there's probably some game theory rationalisation for it. I'll do some reading up on it when I'm not multitasking as much as I am at the moment but hopefully someone will save me the trouble and just tell us the answer.