Juvia's fight was the best. I could somewhat accept Erza's. Laxus' one though, I'm just to expect a simple "I lost" from Jura? That guy had 360-range attacks that were a little slow, and seemingly lightning reflex martial arts up close. We know he's powerful, but his showdowns during the Nirvana arc displayed that much better.

The white/black fellow seems to be Future Rogue, though the white hair makes no sense then. He's the thing that possessed Rogue, in any case.

@DE: For us as the audience, FT losing would indeed be an unbelievable outcome, but from the Fiore perspective having a no-name, forgotten guild come out undefeated along with the prideful Sabre surrendering would actually be the more unbelievable one.