It's all about stats and chances. My susanoo itachi has 16k crit... but he won't crit with a 100% chance, not even against these lvl 5 wolves.

That standard, just like water's first, has an increased chance to do so.

I don't really understand the mention of wind main's rasengan, that auto isn't really as op as you probably think. Just situational, as like 80% of the other skills. Only a minor parts are just straight better than the others.