Never mind. Saw this thread. I think Cassandra is scrwed here. These guys have the best bullet dodging feats I have ever seen.
http://www.comicvine.com/snake-eyes/29-6452/snake-eyes-and-storm-shadow-respect-thread/92-392694/
It's been a few years since I read G.I. Joe comics but from what I remember, Snake Eyes slices her to bits.
He and Storm Shadow were capable of doing crazy shit like moving their swords so fast they caught fire, reacting and moving faster than bullets to the point it was without a doubt superhuman, outrunning vehicles, performing random ninja stuff lsuch as turning invisible or mental based powers like entering an unstoppable berserker mode, senses that were borderline precognition etc. To be fair, there were times that writers toned them down.
There about half a dozen major different versions of comic Snake-eyes. The main three are the DDP version which is a continuation of the Marvel and Image continuity, there is the reboot IDW version which ignores all the prior GI Joe comics, there is the IDW relaunch version that is a continuation of the Marvel continuity but ignores the Image and DDP run.
Marvel/Image/DDP continuity Snake-eyes makes Batman look like a yellow belt and is legitimately superhuman. I would give him odds against the entire Batfamily in h2h.
Marvel/IDW continuity Snake-eyes is tough as nails and incredibly skilled, he would take a slight majority from most street level martial artists.
IDW continuity Snake-eyes hasn't really did much yet and gets rolled up like a sleeping bag.