'right wing nut' is redundant. In this day in age, it's pretty well much assumed until otherwise proven.
It's a user review. If you're using MetaCRITIC for user reviews, you're doing it wrong.
It's not even an issue of business ethics. If they were paying someone to edit their wikipedia entries, yeah, that would be an issue. Yet they're not doing that. Stop treating them like they're Microsoft.
"Our Engine"
WOW...talking like you built it from the ground up or something.