A lot of people are thinking it became exclusive prem v prem queue. But sometimes you still face pugs which didn't get into the same game as you because of bought accounts on opposite accounts queuing as 6 and not joining or because of horde premades dodging pops happening before 5 mins. Just regular pugs after 5 mins in queue.
Also this would mean even more possibilities of wintrading by ghost queuing with bought/alt accounts on opposite side for the chinese alliance & horde premade, who are still doing it despite the several reports and proofs sent to GMs.
You queue as a raid, get an instant pop which was meant for the alliance chinese premade because you're ahead of them in premade queue and this happens due to ghosts or horde premade dropping queue/dodging :
http://imgur.com/LNW81rDSometimes they even join games with the ghost accounts and just stay afkish at a GY, to prevent real players to enter and play the game, in order to get easier wins. We've seen it happen during WSG weekend last week. The green geared rogue would just move in stealth at the GY to prevent from being kicked out of the BG and effectively make the game 9v10 on top of blocking a spot for a real player.
The current queue system as it has been asked since months to prevent such things from happening. Making a pug prio queue is enabling these abuses they do not seem to investigate well enough.
Anyways they need to fix this because past 5 mins in queue as more than 6 u're supposed to face pugs if no premade is in queue. Sitting in queue for 49 mins definitely means they either tried something without giving any notice or queue system is broken.
"Slicypug made" as you called it can beat these guys with 13 ppl, 2 random pugs and 0 ex-ranker btw :
http://imgur.com/a/gZvq6-Xinbinoldman, chinese rogue
-Touhenying, chinese wlock
Pretty straight forward & controlled game, holded 3 bases until 2000/1500.