Alright, here's a bunch of framedisplay side-by-sides. Some of these are trivial, some of them less so. This should be all of their normals. Things with no equivalent aren't compared (6B and 6A/6AA on H-Sei are just by themselves), 5C is there twice (once for 5C v. 5C, once for 5[C] v. 5C), and j.C is there twice (once for j.C, once for j.[C]).
http://imgur.com/a/A83JqAlso note that this obviously won't show you anything other than hitboxes for normals, so things like how stupidly better C-Sei's 236x is won't be on display.
Unfortunately, C-Sei is just has better options, end of story -- and it doesn't take finding a lot of secret tech to make that obvious. You can tell it just by pressing all the buttons each character has.
The biggest problem this chara has is that C-Sei exists, and does the same shit better.