I thought if your getting the right odds the cards dont matter.
Here's what I find is the problem a lot of the time. Let's say you have 98o in the SB-- effective stacks are 1500, and blinds are early, say 15/30. There are two limpers in front of you, so you're getting 7:1 odds to complete. Super, we call, and the BB checks.
Before the flop comes, we have to ask ourselves, "what kind of flop am I going to be happy to see?" With this type of hand, we are really looking to hit two pair, or an OESD perhaps. However, much more often, the flop will fall something like KT6, or J83, etc. These are all very marginal flops for us, because we will end up losing a lot of money trying to find out if we have the best hand.
So while the pot is often offering us sweet odds to play, we have to proceed very cautiously when playing from the blinds. If we don't hit the flop hard, in a one table SNG, it is likely best just to be safe and fold. Otherwise, we just end up spewing most of the time. You could make the counter argument that you will make up enough money on your huge hands for it to still be +EV, but you would need tremendous implied odds, especially if, as mentioned before, we start spewing with mediocre hands. In most cases, it is unlikely we are getting these implied odds.
Moral of the story: in these SNG's, play tight to avoid losing a ton in bad spots.