I didn't notice much of a difference, but it had been almost 4 or 5 years since I played Tekken Tag.
I also played Tekken Tag 2 before they did the Unlimited update(see below) in March, so I'm going by an older version. The console version will be based on the Unlimited version of the arcade one.
Copy-paste info about the update from wiki:
Tekken Tag Tournament 2 Unlimited is an update to Tekken Tag Tournament 2. It features a number of new items and customization options. It also gives the game a balance update from characters and items. It was released to Japanese arcades on March 27, 2012 and the console version of Tekken Tag Tournament 2 will be based on this arcade version.
In the Unlimited version, the player can switch a ratio between Tag mode and Solo mode ("2 vs 2", "1 vs 2" or "1 vs 1"). There is also a "Pair Play" mode, which allows four players to fight simultaneously in pairs of two, much like the "Scramble Mode" in Street Fighter X Tekken. The Unlimited version also features the "Rage" system from Tekken 6 for Solo mode characters, and the new tag partner Rage system from the original arcade version of Tag Tournament 2 for Tag mode characters only. "Rage" gives characters more damage per hit when their vitality is below a certain point. Once activated, a reddish energy aura appears around the character, and their health bar starts to flicker in red. The "Netsu Power" appears when an on-screen character gets attacked a certain amount of times and the off-screen character's lifebar flashes. If the on-screen character tags out while the off-screen character's lifebar is flashing, the tagged character becomes slightly stronger.
This was on a friends fb page last night
