User blog comment:Metal Mario875/DEATH BATTLE - REMATCH - Mario & Luigi VS Sonic & Tails/@comment-27928065-20160722160639/@comment-26374068-20160921000753

1. Actually, Knuckles Enerjak was not 5th Dimensional, True Enerjak was. When Sonic defeated Enerjak, he was capable of destroying some universes. That number jumped an infinite amount as True Enerjak. But, saying as though Knuckles Enerjak was 5th Dimensional, Super Sonic would still not be 6th, as that means he literally has to be infinitely more powerful than Enerjak. And Enerjak gave him a run for his money, as a matter of fact. And that also applies to Ultra Sonic. The multiplier would have to be infinite, not 2x. And that's just to be 6th Dimensional, assuming he was 5th in the first place.

2. That weakness has been rectified on multiple occasions. And besides, Sonic and Tails have no real way of using such a weakness against Luigi anyway. I know you agree, I'm just,  y'know,  defending my reasoning.