Learn what keeping up with actually means. Dodging someone's strike isn't keeping up with them. Barely dodging someone's strike only means that you'll have issues repeatedly avoiding them when they start using shit like Shunshin to land their attacks first, nor do I care about Dodai reacting to the Third Raikage cause it doesn't even have any relevance to my main point, nor does it counter it. If Sasuke wants to play cat and mouse with someone who is faster on foot, with far more reflexive movements he can try, but it all ends with him getting shanked by Nukite. Zero difficulty. Enton Ribcage isn't going to save him from an extending spear of lightning.
Danzo got hit and his arm was up. It didn't even hit his arm, so no, not the same thing.
Lol, Izanagi caused him to vanish, he didn't get burnt up within seconds.
Linear? Irrelevant. Go tell that to V1 Ay vs. 5 Madara clones, who only got him in Genjutsu the moment he was distracted and immobilized.