G-Series vs. SX-Superzooms??

Obviously not apples-to-apples.  But might get closer if you eliminate the zoom range differences.

So, doing that, do the later G-Series (maybe from G10 to the newest G15)cameras simply blow away the IQ of the later SX-superzooms (SX30, 40, 50)?  Is there an obvious difference here?

This is "mainly" an Image Quality personal opinion comparison.