Couldn't MAdara use genjutsu on them.
Hashirama cannot use the tailed beasts as battle weapons like Madara did, so it doesn't make a difference. And Prime Hashi already fought EMS Madara.
Don't be so sure. It was Hashirama's power that Madara and Obito were using to control the Juubi.
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The guy whipped his ass without even going SM..