2:1 Calling With Any 2 - Expanded

[se2schul]

Often in late game play, you get into situation when the blinds are so big compared to people's stacks that you get the opportunity to call a single all-in getting better than 2:1. The accepted rule is that you should call here with any 2 cards IF calling is less than 1/3 of your stack. The reason is that a random hand usually wins 33% of the time. Of course if you suspect the villain doesn't have just any 2 cards, you may want to tighten up a little.

The recent discussion on coinflips has got me thinking about this. If you sneak a peak at your opponents cards and see that you are 47% to win against his hand, would it be correct to call if you are getting better than 1:1 from the pot for less than 1/2 your stack.

Here's an example:

UTG T600
UTG+1 T800
Button T800
SB T800
BB (hero) T5000

BB is T100

You have A9
Blinds are posted and it's folded to the SB.
SB pushes and shows you 33.

You are a slight dog to call, but you are getting slightly better than 1:1 and it is much less than 1/2 your stack. Do you call this? Do you consider this to be a similar situation to calling with any 2 when getting 2:1?