Offensively speaking, BM is powerful enough to easily destroy universes, and kill Spectre:
...What's far more impressive, however, was his ability to shrug off Mxy's creation-busting attack(which destroyed the sum total of DC, past/present/future), without so much as a scratch to show for it:
So even IF you want to argue that MoD's offensive feats are better, there's still no way he's harming BM.
Of course. But as always, it doesn't matter what a few morons think.
Fact is, multiple sources have established that there is only ONE Mxy in DC, and ALL of his showings...across ALL platforms of media...are canon to him. And since Bat-Mite represents "one little bit" of Mxy's own power, it means that ALL of his showings...across ALL platforms of media...are also canon.
Hell, years ago Bada even made a mod-ruling that World's Funnest was indeed canon to Mxy. So any way you cut it, WF is perfectly valid. 🙂
Not canon would also mean not part of the DC Multiverse as it is establish. Thus Mxy loses.
According to this poor logic, Injustice comics Mxy was too weak to beat Trigon of Injustice. Just let that sink in fanboys.
On topic though, Batmite wins. MoD is overrated piece of shit character beaten by Doom alone.
In all fairness, Bat-Mite's history is a ****ing mess, and the "retcon" if you will happened like 5 years after World's Funnest. I don't think he was operating at a tiny percent of Mxy when he can tank a pissed off attack from Mxy that destroys everything.
Seems like that Bat-Mite was fully intended to be an equal with Mxy in that story.
srug