Raid 2 felt like a totally different movie to me,not a sequel.The opening scene was unclear and the first half hour or so I was trying to figure out what the plot or storyline was.
BUT....I'm kind of used to confusing plot lines in martial arts films so I definitely don't hold that against Raid 2.
I watch a few here and there.A few Bruce Lee Jet Li and some misc. movies. Maybe this isn't classed as real Kung Fu But I love The Last DragonBorg are you into Kung Fu movies too?