by kraada » Mon Jan 21, 2013 2:29 pm
We'll compare two cases to see how the numbers work out.
Let's assume we have a pot of 2 on the flop (this makes math easier).
If we have a Cbet of 1 which is raised to 3 the raise is for 2 more (3 - 1) in a pot of 4 (the initial 2 + the bet and call), so you'd be facing a 2bet of 50% of the pot.
If we have a Cbet of 2 which is raised to 6 (3x), the raise is for 4 more (6 - 2) in a pot of 6 (2 + 2 + 2) so you'd be facing a 2bet of 66% (4 / 6).
However, I would encourage you to try to think about postflop situations like this regardless because your pot odds are based on how much is actually in the pot - just using a multiplier of the last bet, while convenient for preflop play, is less useful when it radically changes your pot odds. You could call a lot lighter in the first case because you only need to be good 25% of the time (if you won 1 and lost 3 you'd win 6 and lose 3 * 2 or 6), but in the second spot you need to be good 40% of the time (if you won 4 and lost 6 you'd win 4 * 6 = 24 and lose 6 * 4 = 24). That's a pretty big difference.