The only reason I won those fights is because i had brand off cd. Chances of victory vs properly played wargs going all out are slim when you can't brand that initial stun. They were some good fights though, a nice change from the vast majority of wargs (or creeps and freeps in general) who just stalk and call out for more till they think they have certain victory.
Besides that I find it hard to believe that i'm the only hunter you're having trouble with. There's really nothing special about what I do, there's far better hunters out there for sure.
PS. There's a couple of wargs out there that parse higher than you still (on me as a hunter, not on NPC's). This could be crit/dev luck or less CC from my side but i've fought them a couple of times and it seems consistent. Just send me a tell in game if you want to know who they are.
Warg numbers start falling? Surely this isn't the case on evernight, i see more and more wargs each day, especially before the creep zergs are up. To me it seems as a ton of creeps are just playing their warg till the usual suspects start a raid at which point they log their main creep to start zerging around the map.
Luckily more than 95% of the warg population doesn't have a clue about how potent the class is (same as burg).