Mainly the chassis is 2.5mm for the Euro edition with hard arms, front oneway, different top deck and it does not come with the standoffs
Carpet edition has, 3.5mm chassis, more solid top deck, extra hard arms, duel diffs (new material not the factory lighten specs) and includes the standoffs as well.
Check out http://www.teamxray.com
and you'll be able to find the specs and a brief tour inside the web page.
Best of luck-