Let me start off by saying: I am not writing this as a way to tell everyone "you WILL like this story." I'm not going to try to change anyone's opinion on the story of WoD. If you dislike it greatly, that's fine with me. I just wanted to clarify a very confusing aspect of the story using a simple thought experiment:
What we know: Garrosh goes back in time to build the Iron Horde to attack us. So we invade his Draenor. So are we going back in time, or is it an alternate universe, or something else?
I don't know what it is, but its very easy (relatively speaking) to prove we are not time traveling. The way this is accomplished is by comparing Warcraft time laws. Warcraft time laws are the same as ours. Time is relative.
This is easily proven due to the fact Garrosh will have been escaped for a few months on Azeroth, yet builds up the Iron Horde for 2 years on Draenor. This proves time is relative. (We don't know how long it takes him to escape to Draenor, and what the 2 years is considered, but a few months is shorter than 2 years regardless).
If time machines were possible: if you and a friend built a time machine, and your friend went back 100 years and stayed there for 20 years, and came back to the same moment he left, to you it would seem like he was gone for an instant. Yet he spent 20 years in the past.
Here's where the proof comes in: if we were traveling back in time to Draenor, the near instant we left, we'd also come back, regardless of how much time we spent there. But we don't. Time appears to flow equally between AU Draenor and MU Azeroth once they are connected through the Red Dark Portal.
The reason I say 99% sure and not 100% is we don't as of yet have any confirmation that communication of some sort exists between AU Draenor and MU Azeroth, but I'm sure there will be in the form of reinforcements and such.
So in the end, I can't tell what technical term we will use for traveling to Draenor but more than likely its not time travel. Garrosh does, we don't.
And also, I have no interest in telling people they should like or dislike the story, just wanted to clarify to the best of my abilities that it appears NOT to be time travel we are doing.