I do not think you are being very objective let alone fair. The mods that Mark sells are not proprietary. He wrote a very lengthy post with plenty of pictures to show all of us how to go about implementing the mods. Perhaps you should get one of each and post your impressions.
I'm sure he's an honorable guy...that's never been even questioned. But to be objective towards a comparison review is to take into account the self-interests of the reviewer. In this case, it's in his financial self-interest to promote one he frequently mods for $$$ over one he doesn't.
If you're asking me to compare a D5000 and D7000, I owned the former and own the latter. (somewhere on Head-Fi I posted my thoughts in as literal terms as I could muster...I forget where)