Lets take this back a few caps. Sewer cap, bird op, a custom set can easily kill a bear, break root shat blast, dead, there was alot of custom mages as i remember. Dex was most powerful

Nuri cap, the demo mace set was op in any hands. Even a str mage can win against a int mage. So str was the most powerful. But a good int mage could have a pretty good chance against bear and bird.

Mount fang cap, crafted lilith was soooooo tanky. Plus high damage. All a mage had to do it steal fire ice a bird to win. Lucky if bird dodges. So int is the most powerfull here.

The 71 cap I wasn't here for it so i wouldn't know. As far as I have seen at 66, either str or dex is the most powerful.

Now at the current cap. At first dex was VERY op. 1 blast would kill anything not str. After the nerf savage became op.

So if we tally everything up..

Dex: 2, sewer and early bsm, maybe 3 because of 71 cap.
Str: 2, nuri and current cap.
Int: 1, maybe nuri too.

Now every cap has its own "most powerful". But it should be most powerful in its own class. I.e int-mage str-bear dex-bird

Also the gap shouldn't be too big like the current cap.