Confused by corkscrew frame data

dudley

#1

I noticed that (i play akuma mainly, not sure other chars) that often a dudley will reset me in the corner and corkscrew and it goes straight through me, I land and dash forward (trying to parry lol). I don’t get hit. So I looked up the frame data and it looks fucking strange as hell. Like is this data wrong?

http://ensabahnur.free.fr/BastonNew/hitboxesDisplay.php?sMode=f&iChar=4&sMoveType=fd_supers&sAction=w&iMove=49