Let's just say the New X-Men consist of Surge, Hellion, Rockslide, X-23, Mercury, Elixir, Dust vs. Teen Titans, Robin, Wonder Girl, Supergirl, Miss Martian, Kid Devil, Ravager, Blue Beetle.
The Teen Titans have some big powerhouses, Supergirl, Wonder Girl, Miss Martian, and have Robin's leadership skills which dwarf Surge's. This battle would be very close. Hellion can match Wonder Girl and Rockslide can try to beat Supergirl due to his pride but is going to get embarressed. X-23 and Ravager would have it out, and this would be an interesting fight. Once Surge finds out Blue Beetle's powers stem from his suit, she'll try to disrupt it with electricity. Robin can do very little about a sandstorm but he can pulverize Elixir before Elixir can touch him. Mercury and Miss Martian would fight and despite the fact that Mercury is very skilled in the use of her powers, Miss Martian would probably win. This battle will probably go to the Teen Titans since they have more power and experience.