That is certainly what I am seeing Ray. I had thought that while the microlenses are good at funneling more photons into a pixel well, simply running longer subs and collecting more photons coming straight into the pixel would negate the absence of the microlenses. This was my test stack in Ha with the mono camera, just 10 * 360" subs at f5. I am building longer subs now and they look better.
http://www.astrobin.com/full/244755/0/
It's a start.