I like many others here am a big fan of what REDFROG has done in Red Faction. With that said, I don't use any of his models any more. I noticed that the animations were longer and therefore took me longer to reload.
Now if the weapon models took less time to reload, I would say that yes in fact it could be used as an advantage over those that didn't use it.
Personally, I probably would have not approved the review. I would have asked infernus to resubmit one with an explanation why he thought it was a cheat. IF it was a valid reason, the file probably might of have been removed from the site.
As far as PF and why I don't use it...I don't like what was done with the rail gun. It's a lot harder to see players when using the heat sensing scope. I don't use an aim bot and as far as using an aim bot that probably would only be effective in TDM or CTF matches, which I rarely play.