Decided to give this a go on the Switch. I have played a few times, but never beaten the game or gotten particularly far. It's really disappointing how easy the first six opponents are if you are familiar with Punch Out at all. I cruised through until I hit Masked Muscle, who gave me problems for a bit.
Now Sandman is whooping my ass. The delayed uppercuts get me every single time. I remember Sandman had some kind of gimmick when you hit him with bodyshots on the NES version, but I can't tell if that's the case here.
I don't quite understand the mechanics, so I think I need to read the manual. When you have full meter, the speed punches seem a lot less useful than the power ones, so I am probably doing something wrong there. And sometimes my regular punches go much faster, but I don't know why.
The game is beautiful, and the sprites look better than I remember. I think the voice samples could have helped add a lot of character to the game, but are pretty weak mostly. Gonna keep at it until I beat the game.
Edit: So, after reading the manual I learned that in addition to the super meter at the bottom of the screen that grants access to your "knock out punches" on the A button, there is also a "powered up" state, represented by the background of your character portrait. (From green to red, flashing when full.) This powered up state is what gave me the speedier punches that I noticed before, and it apparently also increases the damage of your knock out punches.