Well, for fun, I've been reading through the old Acts of Vengeance storyline (another major Marvel crossover featuring a super-powers registration act), and I came across the New Warriors' first appearance as a team in Thor #412. It's eerie how similar this panel felt to those criticisms:
Here, in their first battle as a super-team, they've also found themselves outclassed. Marvel Boy's suggestion is unheeded by Night Thrasher, who goes a little over the edge a few pages later. The brash, young, inexperienced team rushes in to do battle with a stronger opponent, with little regard to reason or their own abilities. What opponent could this be, you wonder? After all, if the seasoned veterans of the 2006 New Warriors team could be outclassed by C-lister Nitro, this must be Armadillo or the Mandrill or at best a member of the Wrecking Crew.
Yeah, they were outclassed. Seriously outclassed. Freakin' Thor was outclassed. But this is the Juggernaut here, and this is their first outing, not a routine ambush after years of fighting Juggernaut-scale foes. If you ever needed another reason why the opening scenes of Civil War are ridiculous, I present to you Thor #412: the type of villain who outclasses the New Warriors.
Not freakin' Nitro.