A missed c-bet here means his range will be weighted to KK and QQ, plus the occasional AK, AA, and a few give-ups. So I'm turning my hand into a bluff here, targeting KK and QQ. I figure for balance sake I should bet small because that's what I would do with Ax vs a mostly capped range, and I can exert more pressure using bigger sizes on later streets if need be.

Gin turn, now I'm betting for value but still against what I perceive to be a KK, QQ type hand holding on for dear life, hence my small bet size.

Suddenly it becomes clear that he doesn't have KK or QQ. I really don't think he has any bluffs here at all. As far as I can tell, he's got only AA (most likely, given his small 4bet pre) and flushes (mainly Ax hearts, maybe JThh, except I'd expect him to c-bet JThh so that's unlikely). I'm getting a fantastic price, like 4:1 I think, but I just don't think I beat a single hand he plays this way.