The issue is that QC policy has changed a bit, which is part of the reason he QC team iteself has been updated. We feel as if what receives an analysis in OU has to be not just usable in OU but actually something we want to encourage users to use.
If we go over the OU viability rankking list, the number of Pokemon that ravage Trevenant, use it as set up bait, or crry knock off is staggering. All of the s-rank eats it for breakfast, other than a couple moveset variants. In the entire A and S rank other than a few pokemon like Gyarados (not a guarantee if its running bite or bounce), Keldeo, Rotom-W, and Mega Venusaur easily get past it or are uneffected by it.
this is the metagame and Trevenant doesn't really fit in with it. You can use Trevenant in OU and it wont be useless, but it isn't something we want readers to think will be a good addition to their team when standard dark/ghost spamming offensive teams will just eat it up
with that being said QC reject 2/3
