The inconsistency between the online game guide and actual stats of items ingame have been fixed.
Blizzard Quote [source]
So the Web Team recently made a few bug fixes to the Game Guide. These fixes should now allow the Game Guide to pull correct data from the game.
Two high profile fixes include:
now displaying +1 Random Affix, as intended.
no longer displaying +170-200 as a DEX roll. This was never intended.
I'll report back once I am 100% sure the Game Guide is without error. Thank you!