After a few matches filled with hax it is clear that Revenankh is uncounterable once it has set up a bulk up.
What happened was i finished setting up TS, then he switched Revenankh in. I switched skarm in, as he bulk up'd. I was going to WW then his Hammer Arm crit on me and proceeded to sweep my team.
For a start, it has weaknesses to Flying, Ghost and Psychic. 2 Of those attacking types just plain out suck, and the other one, Ghost.
A standard 252hp/136SpD Carefull Revenankh isn't even OHKO'd by Modest Specsgar's shadowball. Nither is it OHKO'd by NP Modest P-Z's Dark pulse. That's some serious hit-taking. Thing is, it is a counter to all of it's counters. It's got the same effect on the Metagame as chomp: You need to carry a specific counter to it in order to get by it most of the time. Syclant dosen't have that problem; Everything bar CBAnt is totally walled by Bliss (Use softboiled straight up as BB 2ko's at best), and once you find out they've got a CBAnt you switch to *Insert generic physical wall*. I just don't have enough space on my team to fit a sub-par pokemon like Weezing in just to counter Revenankh. Somthing NEEDS to be nerfed, and soon. If it's not 2KO'd by NP-Z's Dark pulse, and P-Z is arguably the best Special attacker this side of NPAzelf's STAB Psychic (Which is taken out by Shadow Sneak). Now back to revenankh-lets look at those base stats:
90 HP / 105 Attack / 90 Defense / 65 Sp. Attack / 110 Sp. Defense / 65 Speed
90 hp gives us a max of 384 to work with, which is almost always maxed. 105 attack lets Revenankh attack very well with it's Dual Stabs, hitting everything neutral in the entire metagame except for a Ghost/Normal.
90 Defence is equal to Swampert, letting Revenankh take a hit or 2 before Bulking up and ShedResting back to full health and sweeping.
65 SpA is just pitiful.
105 Special defence is the charmer. Standard special bulkiness is 384/319, making it bulkier than Celebi and the standard Suicune before a CM. That's some serious bulk. Add to the fact that it's a Physical CM Cune with Better recovery, A Plethora of resistances, it's only weaknesses are mostly pathetic attacking types, and it has the potential to get a 100% recovery move with ShedRest.
We've taking all of this into consideration, but we haven't pieced it together. Yes, those BS are godly. Those stabs are godly. That ability/Rest combo is godly. That bulk up shit is godly.
Put them all together and we get the manaphy effect, too good for OU, but not good enough for ubers.
Just a little food for thought.
EDIT: Just saw this:
Although it's already in the analysis, I may aswell mention it here because it's relevant. All Posions, expecially with WoW, and all Grassers with Leech Seed, expecially half posion ones, do very well.
I cannot afford to put in Weezing into my team for the sole purpose of countering Revenankh. We then end up with the chomp effect; which is "Put in a counter or loozzee lol"
IMO Weezing does a Sub-par job of everything else other than countering revenankh, so he's not getting a place on my team.