The big difference is the amount of card packs you get in each version. The card packs give you players, items etc to put together your own team and play other people with their teams. You can customize stuff etc. Pretty robust.
The 100 version at GameStop and the PSN store both give you extra. You get a hat from GameStop. Not sure the pack difference between those two.
I always opt for the deluxe with Steelbook. Not much more than base and you get the steel. It's always a sharp looking Steelbook. And you get some extra packs to wet your whistle.