Oh no doubt with his demon blood activated he is in a different league, but is Minato even in the league of the same as human Yusuke? I don't think so.
I keep up with Naruto, I've read and watched YYH as well. I just don't think Minato compares at all Yusuke. He literally has no strength, it is very miniscule to that of Yusuke, I just don't see how Minato could kill or defeat Yusuke, even if he can redirect blasts that Yusuke shot, he can tank them.
Oh and YYH isn't DBZ speed, YYH at most is past hypersonic, but not quite past instantaneous movement like DBZ is, and how do we know sealing his spirit or demon energy would maim his stamina? Naruto arguably has the most stamina in anyone in Naruto, and while the seal made it harder for him to control his chakra, he still could function pretty damn well.
And I'd say Yusuke stamina is far superior to that of Narutos.