MFT Thread Number 60,000 ...

I agree that "allow" was a poor choice of words.  How about I say instead that, as a general rule, larger sensors for any given generation tend to have more pixels than smaller sensors.

And, for sure, an mFT sensor with more pixels than a FF sensor is easily possible (just use the same pixel density as the RX100), but, then again, why not a FF sensor with the same pixel density as the RX100?

In my opinion, the answer to that is that it would result in a significantly lower frame rate and adversely affect video performance (would require a lot of line skipping since binning cannot be accomplished with such a pixel count).

As always, we have to take it on a lens-by-lens basis.  For sure, we might find, for example, that the 9-18 / 4-5.6 on mFT outresolves the 17-40 / 4L on Canon FF.  But, I believe this to be the exception, rather than the rule (when comparing at the same AOV and DOF or the same AOV and optimal aperture for each system).