Any ace or kind can both improve his hand and kill any further action.
If he slowplayed KK+ preflop (which isn't likely) he still would have only a 2 outer. That means he hits very rarely and we shouldn't bother ourselves with that. With KQ and AQ he has 3 outer, so again not so dangerous. Also we block any Qx. I think it is quite indisputable fact that villains weaker made hands do not have so much equity we should be too worried about that.
I personally think he does not raise/fold more often than that
He can have some bluffs. He can be raising with an overpair. Flop 3bet is so so strong that a good villain could be able to fold his overpairs. Also it can be discussed whether he has many overpairs in his range in the first place. So if he doesn't have many overpairs nor does he have many bluffs, it leaves sets that beat us.
This is WAWB situation only strictly theoretically speaking as the part of his value range that defeats us (4 combos) is like maybe 2-3% of his range here, which includes all Qx holdings (like a million combos) and speculatively some bluffs like A8/A3/JT/J9.
Do you really think he would be raising with any Qx? And btw sets are 5 combos.
I don't think he should be raising any top pairs and he should not have many overpairs as those will 3bet pre. If he has 5 combos of sets, about as many strong draws as a bluff and then maybe some random overpairs, I would say we are WAWB.
What you say about Snowie is true. Exploitative lines are most often better at the micros. But I still think Snowie is a great tool to help players to develop their thinking.
Weazel's ranges that I use are specifically designed for the micros.
But eventually the question is what are the pros and cons of raising and going broke already OTF.
If we raise, we get it all-in quickly. At the same time we force him to fold all of his bluffs and he might be able to fold some slowplayed overpairs too. In case he doesn't raise with balanced range and is very tight with his raises, we are only donating money to his sets.
If we call, we can still get it all-in by the river but we manage to keep his range wider. Only risk is that we let him hit his 2 or 3 outer. And that I don't think is a mistake.