Unfortunately, when our stack size differs, so does our bubble factor. In most situations players will actually have differant bubble factors. So let's use a hypothetical example with more realisitic stack sizes.
So the situation is this, we are in the BB and the SB who covers us shoves all in on the bubble in a 27 man SNG. Stack sizes are;
Blinds are 150/300 (i know pokerstars
does not have this level, but just to keep this simple in a hypothetical situation, lets assume they do have a 150/300 level)
Ok, so, we as the BB want to know our bubble factor for this particular situation. So, first, we need to work out how much equity we have right now, you can do this with jsut about any ICM calculator that lets you input a 27 man payout %.
So the equity for all stacks before blinds and antes were posted is;
Ok, so our starting equity or (EQStart) is 11.1155%
So what happens when we call this persons all in and we double up?
Well, lets use our ICM calculator again.
Stack sizes are now;
So, our equity jumps to 17.8008% (EQwin)now we just use our formula above to work out our bubble factor for this situation.
So EQstart / (EQwin-EqStart)
11.1155 / (17.8008 - 11.1155) = ~1.66 Bubble factor.
So we now know that our bubble factor is indeed much lower in this particular situation. But what can that actually tell us about what hands we can call with, or in particular, what % of time we need to win in order for this to be a profitable call?
So, first we want to work out our actual pot odds
for this hand, which is
3300:2700 or 1.2:1
So now lets work out our adjusted odds, all we need to do here is divide the left side by the bubble factor.
1.2/1.66 or .72:1
To convert this to a win %, add 1 and use the inverse
chance of winning.