Itachi Susanoo is better than both of them.

But I have to add that Madara is miles better than Kurama, coming from a guy who won vs Kurama team that had 30k-35k+ more power than me. (yes I have the screenshots)

Madara always creates more issues, that Tai immunity creates a TON of problems for Kushimaru and Minato teams which are both at the top of the meta, Minato will also be at the top for a very, very long time. Madara also grants the person who has him faster wins which in some events is all that matters. Just don't put him pos 1, he is more of a high damaging support. Kurama doesn't really counter anyone, but Madara does counter some teams and he counters them HARD, just like Masked Man.

Kurama was always the FML pull for me, so I have no idea what you're talking about saying Madara was the FML pull, he never was, never will be lol.