That wowhead comment was made by someone who didn't get the item and was just assuming it worked (and disputed in
later comments on wowhead). I wish the ultimate cat thread on elitist jerks wasn't deleted, because me and a few other druids explicitly tested weapon damage in cat form and found that it had no effect (and posted our results there). To be fair, I never tested the might of cenarius specifically, just weapon enchants, so it's possible it had a different mechanic. The first item that was confirmed to increase cat attack damage was the
Ogri'La trinket, that wound up being super OP for the entirety of TBC.
Unfortunately, the only supporting evidence I can find today is the discussion here:
http://thedruidsgrove.org/archive/wow/t-12335.htmlHowever, this was something that was tested in vanilla, and there's a reason why +25 agi and +15 str are listed as the enchants for your feral 2h and 1h, respectively, on Elitist Jerks. Due to the lack of evidence against the status quo, I don't think it will get changed on here, but it's definitely not blizzlike.