Boruto defeating someone that defeated Naruto is something I'd expect to see when the former is at least well in his adult age. Naruto has a ridiculous amount of abilities: half the power of the previously strongest being in existence (behind Kaguya, that is), the power of all nine Bijū, Sage Mode, mastery over Rasengan and its variants, etc.
I can only feasibly see a shinobi with only the Byakugan as his one hereditary ability being able to surpass Bijū Mode Naruto, at best, and that's stretching it to holy hell, given how incredibly powerful the Kyūbi is. Unless Boruto receives a metric fuckton of random power-ups, him being able to naturally surpass his father with just a second-rate dōjutsu should be absolutely impossible. I want Boruto to have attained all of his power through hard work and training, like Naruto was before he went off the deep end with Rikudō.