I wouldn't feel comfortable just yet it making that assertion.
I'm not sure theres a significant difference between the actual die spacing between the two,but the primary optic on the MC-E magnifies the dies to a greater extent than does the silicon on the P7,that magnified image is what the secondary optics and consequently our eyes "see".
Its been said its even harder to get rid of the donut in the MC-E.
Give it some time and see what optics and reflectors become available,new releases are slated for both.
Either way we win
.
I haven't gotten all my MC-E Mag parts together yet,so I can't answer about the Mag reflector,but I'm sure someone will soon that has both.