That's a bit like saying shots on target are irrelevant in football match statistics. If your ITM was 100% it would relevant, as it would if it was 0% (assuming your data sample was significant). In other words ITM, much like shots on target in football, tell you something about the way you are playing...assuming your data sample is of a significant size.
A slightly more helpful reply would be...
STT = 40 buys in (source: Poker Mindset)
And as to moving up...how many STTs have you played and what is your ROI?
OP, I'd be going with no less than 70 buys in (from the same source).
Last edited by Fatboy54; 01-19-2015 at 11:08 AM.