I attended earlier. The G3 definately made better use of the space. Of course wargaming shows have a different focus, however much of the floor at this show was dedicated to competition models - and the tables they were on weren't exactly packed.
As for traders; most felt like local stores which had brought their stock along rather than companies - making finding more niche products a bit difficult, and more of the experience you have going into any model shop.
I had hoped to find some sellers with terrain, but I don't recall seeing any outside of the odd box of Tamiya 1/48th brick walls. Whilst I did pick up some items which likely won't ever turn up at a wargaming show, it definately had a different pace than any of those I've attended. ...But if you were into discounted model ships and planes then there was probably loads there for you.