UPDATE:
Ghostcrawler explained what's gonna happen. I'll leave these 2 slides for your interpretation now.
ORIGINAL
According to a SS taken at Blizzcon and the info taken from the live game, we can compare the different stats in this LFR weapon.
Doing some simple math, the 2 main stats and the 2 secondary stats get reduced by approximately 96% (weapon DPS too). We all knew numbers were getting out of control, but this seems a bit extreme. I seriously hope it doesn't affect our ability to solo content.
(Original size): http://i.imgur.com/soES5Ur.jpg