Ok, at some point I was expecting this...but it took two days which is a good sign I think 
Yes indeed the pace and the way battles are played differ from previous version but I would not call them... well the way you called them. I had to get used to it in the first place as well but it turns out they are more challenging and especially more dynamic thus even more fun.
They don't feel unrealisticly arcardish like vanilla still and to answer the topic's question: Yes it still is DeI, taken to a whole-nother level. The rest I'll leave to KAM for explatation as he is the battle balance leader but I like his approach and agree with most of his changes!
EDIT:
Why is everybody so obsessed with battle length. I mean I don't want them to be super short either but a fun and challenging battle is not about length. For me they have to have a certain grade of realism which is not necessarily connected to length. And I want to add a screen of a battle fought in 1.1 (look at the time!!!!):