I think Hinata may have a good shot of winning this one. It's common belief that she can keep up War Arc Sakura's speed and that's just something SM Naruto can't compare to. It may also be GG if one of her Gentle Fists' blows makes contact with a chakra point.
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Maintaining SM means keeping a fixed ratio of chakras. Disrupting it will either cancel it all together or decrease Naruto's time in SM.