Like we saw, Mitsuki's speed isn't close to Sasuke's after he copied Lee's speed, and he has the Sharingan to boot. He gets low diffed if Sasuke is serious right off the bat and starts reeling intricate kicks and punches that deal a lot of damage to Mitsuki before he figures out that he's...
How is that Shinki and Boruto seem to never run out of chakra while Sarada and Mitsuki are always cautioned to be vigilant with theirs and are susceptible to depletion in general? It's quite perplexing, as you can probably judge.
For Boruto, there's LITERALLY never a moment where he has to halt...
Nah. Mitsuki is just too strong, he's sitting in his own level, a straight genius that even Boruto with ass-pulls after ass-pulls (cheerleading considered) would ultimately lose to. He got Sage Mode if Base doesn't cut it, like against one of the most skilled shinobi in Konoha, after which...