You - 1150
Opponent - 550
You would be subject to all the restrictions of your zone but your opponent will have access to cards you cannot use. It works both ways though as you could face someone 600 points ahead of you.
Are you sure? I'm noticing that on the latest app, a lot of abilities aren't showing up on the cards, but they do actually activate if you watch the difference in the pillz/life totals after the round. It's certainly annoying, though...