It is true, the New Warriors, despite having been showcased as training quite often in their original series, have degenerated a bit into more "rookie" status after their last mini, and should have prepared better for a fight against not only Nitro, but Speedfreak, Coldheart, and Cobalt Man (who can also explode and leak radiation). On the other hand, Namorita DIDN'T simply TKO Nitro because she offered him a chance to surrender; perhaps one could see it as a police officer asking a suicide bomber to "not do something stupid" (which WOULD happen, because lord knows if a cop simply shot a bomber instantly, he/she'd be accused of profiling and hauled before internal affairs for not giving the perp even a SECOND to maybe surrender). Nitro KNOWS he is near a crowded area and BRAGS about getting nasty before CHOOSING to explode. Namorita's only flaw, aside for maybe not minding her surroundings better, was mercy; she was apparently supposed to bludgeon Nitro into a coma before he could burst, rather than attempt to be humane and offer a chance to surrender and avoid a body cast. Is that fair to say that is the agruement of some of you?
Note that all four were listed as being on the FBI's Top list and the New Warriors and a reality TV crew managed to find them, while Agent Hill and her holier-than-thou agents did not.
I still feel that the New Warriors are the undue scapegoats here, and Nitro is all but left off the hook. SHIELD's Psi-Ops devision can be downright godly for plot convience when they have to sift through Spider-Man's head, but they can't locate Nitro, huh? Of course, its all for plot convience, because siccing Wolverine, Namor & Co. on a deathhunt for the man makes for good readin'.