Alright, time to use my 15 minutes before I gotta get to work for some brief argument.
Jericho can just duck under the first swing, and then do a take down, which ends up disarming Tsukasa. He can also just strike Tsukasa's legs, which will Jericho the advantage.
A good sword strike is often on waist level to prevent ducking without getting on all four (getting on all four basically looses you the game, as the position is incredibly vulnerable).
But even assuming he can duck below the sword, he would then approach Tsukasa while ducked. And Tsukasa isn't like a swordsman that can't fight without his sword. Quite the opposite, he is primarily a hand-to-hand fighter.
If Chris ducks and closes in, Tsukasa won't just stand there for a take down. He will follow the strike up with another attack and ducked down Chris is in no good position to deal a counter that follow up. That could be a backhand strike, a kick or, if Chris already got really close, a strike with his knee. Tsukasa uses things like Muay Thai, which are perfect for doing a follow up counter attack like that, as it involves extreme close range fighting with knee and elbow strikes.
We should also not forget that Tsukasa is unlikely to simply let go of his blade even when hit. He is too experienced for that and with his LS he can't be forced to let go. And then he could always recollect it shortly after even if.
Now, to show some Dr. Stone feats.
Look at this fight:
Remember, Tsukasa is superior to everyone there in skill. In fact, he could probably take all of them together...
Anyway, from this clip I want to point out two things. First, everyone and their mother can easily jump several meters high and far... useful for spacing.
But mostly I wish to point out Kohaku's move: Jumping on the sword blade of someone and then jumping off of the blade again.
That move she casually does need so much precision and control, that I have my doubts someone can actually do it in reality. (especially with her shoes...) It's much harder than walking on ropes or something, after all, and even that is hard for most.