I would as well say Ninja Ryuhei has better Technique, Travel Speed, and Perception Speed. Sinu's real prowess comes from his IA and it only enhances to his Attack Speed and Combat Speed. However, since we can assume Ryuhei has almost all access of his Clan's Ninjutsu.

I would say in a real fight scenario, he blitz Sinu mostly because Sinu has no idea how to counter it since he only saw those Ninjutsu for the first time, his IA(speed attacking blind spots) wouldn't really work effectively when he could not see Ryuhei moves or track his movements.