If you're used to flying C150/PA28, C172 may seem a bit more prone to three-pointers, at least from my limited experience.. if it's not trimmed well, it's quite difficult to flare it nicely
First, it should be trimmed. Second, the 172 has absolutely appalling ailerons, to the extent I often wondered if they were even connected to the yoke. The elevators, however, are superb and allow very fine pitch control down to the very lowest airspeeds. There is NO excuse for 3-pointing one.
When I used to meat bomb with one the jumpmaster would sit in the open doorway during the return flight and landing (static line drops, RH door removed) and give marks out of ten for minimal flexing of the main gear leg as the RH tyre kissed the tarmac, fully held off of course. The frequent short flights in meat bombing does wonders for one's landing currency!