No, because it doesn't fix the power imbalance, only the utility imbalance.
Before I go on, I want to isolate some things:
Feats, Multiclassing, and other Optional Rules.
Many people regard feats as helping martials, but I want you to bare with me for a second. Let's ignore them.
Okay, my response:
High-level fighters have more than double the HP as Wizards given a typical build.
If the fighter has a +5 to Con and a Wizard has a +1, the fighter has 224 HP while the Wizard only has 102. Giving the Wizard a +5 in Con pushes them to 182 which is still significantly less than a Fighter.
As for damage, the fighter attacks AC while the Wizard attacks ST, usually. AC remains somewhat low at most points but ST's at higher levels are usually very high, well within the double digits. There are also Magic Resistance and Legendary Resistance.
This isn't to say Wizards completely flop during combat, but they must be extremely judicious about how they wish to distribute their damage and effects. So much so that I would even say that a Wizard player with an insufficient understanding of combat/spells would be a liability more than an asset.
The possibility of Wizards outdoing Fighters in combat is clearly there, but outside of focus-fire single-enemy NOVA situations, Wizards have to work much harder that Fighters to get remotely the same mileage.
So, in a way, Martials can be seen as the safe option in combat, and the closer your class is to a wizard, the more carefully you have to pay attention to even be relevant.