Ehhh, Technically Zeed wasn't beaten, as Monodramon forced a Jogress between himself and Zeed. (Note, this is believed to be why Cyberdramon is so vicious)
Back on topic, I still think NEO wins, and as worst, a draw.
And Erza isn't exactly stupid either. I am sure now that the Adamantine Armor can withstand whatever Deidara can throw at her. And also, Heaven's Wheel armor can launch MULTIPLE projectile swords. Heaven's Wheel can attack both clone and real Deidara.
Hmm, this is a tough one. I'm sure that the Adamantine Armor can withstand most of the explosions, and Erza can adapt easily to the situation by changing her armor( althoug hit will be a little more difficult without Lightning Emperor, apparently). However, that's not all Deidara can do, but to what extent I'm not sure. But due to the Adamantine Armor's durability, I'll give this one to Erza for now.