A lot bigger.
There are 48 gates for a start off.
Check in is better as the desks are in rows so no confusion as to which queue your in with everyone snaking all over the place.
There is still a fair bit to do in there mostly with the concessions areas and a lick of paint on the inside walls wouldn't go amiss.
Departures area is a lot larger and more comfortable while waiting for your plane.
Also they have covered walkways to the planes rather than the buses.
In arrivals there are moving walkways to the security area. The baggage collection area is fairly big.
The one big problem I can see is leaving the arrivals area. It is below ground level and there are a set of stairs and five lifts to exit the terminal. Ok not a problem with not much luggage but I can see a big problem with the amount of lifts if 2-3 planes land at the same time. I can see a lot of queues to get out.
All in all I was impressed though.