No, no. I'm referring to the fact that Shiro can only reach 100% of her power then she... explodes .
On the other hand, Mimi's power can hypothetically be of an unlimited % depending on how much sin she ingests. As long as she is able to access that energy source, she'd be able to defeat Shiro in terms of power. Cunning would be another factor, but Shiro prefers to use a single blast-type attack rather than copying abilities like Toro . This shows a lack of strategic ability while Mimi uses strategy and cunning all the time.
Plus, I like Shiro more than Mimi.
Ooooh! We live in the Highlands with our kilts in the wind! We're the Tartan Army, come join us, my friend! We look so dandy, jolly, and bloody right! We wear tartan because of our Tartan Pride!