Francis Ngannou used to be a one-trick pony before getting to Stipe and got schooled for that. Then after that he learned how to TDD him in their 2nd fight and knocked out Miocic. Then when he faced Ciryl Gane where he was soo agile and mobile for his size that Francis couldn’t seem to find some opening to knock him out, he resorted into wrestling in the most surprising way possible.
Now if Sergei relies so much on his strength, it’s not gonna be enough unless his extraordinary reach and precise boxing would make a difference.
Francis may be a one-punch destroyer, but Sergei has the better striking accuracy balanced with power.