party 15, 20 and 30

[dstyle]

i apologize if this has already been discussed before.
Has anyone else noticed that the 20-40 is significantly more tricky/difficult than the 30 and 15 games? As in,ppl are a lot more likely to raise and push a variety of hands on 20, raise the turn to knock you off of hands, etc...while the 15 and 30 seem to run much more straightforward (you have certain types of players, and they fit the mold)