Stat maxing questions

[Bart's Friend Milhouse]

That's weird. I maxed out her Luck to achieve that exact result and it worked.

You are mistaken. Morph never criticals and also ignores row modifiers on enemies automatically.

Exactly what do you people mean by critical?
I've heard sound enhancements signifying more powerful blows many many times whilst using Morph and seen differences in damage dealt to boot