I've been playing Hunter/Disc with a friend who just dinged 90 and I have to agree it's ridiculous. We've been playing at 1850/1900 MMR since we started from 0 rating and we're at just over 1800 rating atm. When we get a good chain off, the other team literally can't do shit. Even with my partner's immensely bad gear, we're still beating a lot of teams just because of the ridiculous CC. When it comes to cleaves, though, we can't do anything since my partner gets killed in like 1 second xd.
But yeah, bottom line is that 2's isn't balanced.