This is where I love HEM, 'cause I can get instant real-time 3-bet & 4-bet ranges (both as raiser and calling) on-demand. Not so much use with a small hand sample, but for folks where I'm sitting on 1K hands plus, this is great.

So if I'm looking at their range and it's weighted heavily to high pockets TT+... even if AK is in there, I'm prolly folding deep. Even if it's pretty balanced (maybe AK 25-35% of the time) I may not opt for the coin flip unless I'm sitting on AKs and the pot is enough to make up for the odds.

However, if I'm seeing a range that's say 50% or less QQ+/AK and the rest is lower pockets, AQ,KQ etc (and there are a lot of people that shove that wide at least at $25), I'm calling all day long HU.

HEM + a f-kload of hand histories... a really nice addition to reading PF stack-off ranges.