Originally Posted by
Doc Kwok
In ZWJ's case, that is impossible to prove as with the possible exception of Zhang Sanfeng, no-one has stronger inner power than him.
The general argument for this is that ZWJ had to use the highest 7th level to make the two Yuan Ming elders fight each other (and it was explicitly said that 5th or 6th level would not be enough). The two elders combined were at least a level or two below him, so presumably the 7th level would not be enough to handle someone on-par with himself, let alone stronger.
This tends to forget that QKDNY is not just about making your enemies fight each other/themselves (which is kind of gimmicky, and is borderline toying with your opponents). It enables you to make the most of your inner power reserves, spot/create weaknesses, store/release energy etc. Without the distraction of ZZR, he could easily just clobber the two elders with 9 Yang+QKDNY in a straightforward manner without bothering to use the advanced techniques to turn them against themselves.