Ok that mostly clears it up.no.
the implication is that if you want mundane martials and casters that really ‘feel magical‘ that magic will outdo martials. At that point balance has to be done via pacing and limited use resources.
I just find it really odd that people expect martials to be mundane in anything after tier 2 or so play.mythic in many ways can be more fantastic than superhero. So it really depends on what mythic you have in mind.
The kind of quests you're going on, the kind of challenges you are facing get more and more mythic so it's should be expected that the characters do too.
Sure you don't have to play that way. But if you don't, then your essentially repeating the same play experience you had in tiers 1 and 2; just with different trappings. And that, to me, seems limiting in addition to boring and mostly pointless.