I am at 900 to 1100 respectively and I have been running since Midnight Friday. I am also quad boxing with every toon running different bounties at the same time with a modified Adventurer / Trinity. I am fairly positive I am running more bounties than just about anyone. I am also running bounties at sub 2minute complete times. I am calling BS on this.
Here is some math::
1200 (total mats) / 12 (total hours) = 100 (mats per hour)
100 / 16 (max mats per run) = 6.25
6.25 / 5 (total bounties per Act) = 1.25
So you are either running T7+ Rifts solo at 1min 15 seconds with no failures/game restarts or running in public games (which is an account death sentence) where no one is afking or under-geared.