PS4 has serious deadzone issues on controller. Also the competitive for honor subreddit there was a post that says in testing there is a 3 frame delay on controllers.
Playing FH on M+KB works perfectly fine. I'm a prestige 5 PK with over 60% win in duels and I play on M+KB. All attacks can be reacted to at the same speed with any character it's switching guard after that has different properties based on the characters you play. Raider is not a grappler. At top level play his potency comes from his cancels, he's one of a few characters who has an unblockable attack that can only be parried, as such it functions as a basic 50/50 he can let it ride or choose to cancel it if he cancels into a parry he will parry his opponent and punish. Contrast this to say PK where I don't have any way to open people up outside of my zone attack because it's too fast to react to.
Warden is very good, his vortex is legit.
The game favors strong defense in general, and defense in FH is much easier than most fighters. The reaction windows for blocking and teching throws is pretty large, as you progress and get better empty guard breaks and attacks no longer work, it becomes a game of baiting parry's and wiff punishing or punishing unsafe moves.