Interesting and most likely true. Only five characters out of the entire clans history have had MS and only two have EMS. So compared to the three tomoe yeah, byakugan is better. The MS might be a different story since it allows even greater insight then the regular sharingan and it has those ridiculous attacks. Whether heavenly rotation can defend against amaterasu is yet to be determined, it seems plausible but is yet to be proved.
Off topic, one of your manga pages actually answered one of my questions from the new chapter from Wednesday. Why was that Hyuuga holding Ino when she was doing her mind transfer tech? It might have been to carry her while she was out of her body, but also the page stated that a Hyuuga can help increase or decrease someones chakra flow, which would make their techniques more effective.