[SNOWBALL]

call, then lead a paired river and go for a 3 bet. Otherwise checkcall.

Even if we 100% discount j9 from his range, there are still only slightly more plausible 2 pair and set hands you beat. You're often gonna be shown AJ. You don't wanna 3 bet and give him to chance to 4 bet you when you're only a slight favorite.

edit: this is a basic combinatorics question. We can remove a fair amount of the 2 pair hands from his PF range, but we can't do the same with AJ. Tons of players coldcall with AJ offsuit here. Add in J9s (and maybe sometimes offsuit) and we're not much of a favorite, and probably a minor dog. You really don't wanna get 4 bet here. Just call down unless the river pairs. For realz