The problem is that there are 3 clans that uses the byakugan, so if someone compares the byakugan with the sharingan, it can't only be limited to the Hyuga clan. Otherwise they should just straight up compare the Uchiha with the Hyuga, not the Byakugan specifically.
Who knows, the Hyuga might be the weakest Byakugan users, while the Ootsutsuki's moon clan and the god clan have a higher level of mastery, that's why it's stupid to limit Byakugan to the Hyuga clan only, when we don't even know how the other two clans used Byakugan.
An eye is only as strong as the user itself, that's why a stronger user will definitely have a stronger feat with their Byakugan. Kaguya is also a Byakugan user, so I don't know why her Gentle Fist feat is being ignored.
Make it clear if this is about the Byakugan vs. Sharingan or just the Hyuga vs. Uchiha. Otherwise we'll never know the limits of Byakugan unless the strongest user shows us the limits it possesses.