Supernova isn't a title Oda created just for the hell of it, it's supposed to have a meaning. They were all over 100 million for a reason, that's in no small part due to their strength and we saw what they could do in Shabondy, they're no pushovers. They're the frontrunners of the new pirate era for a reason. Blackbeard isn't a Supernova but he's part of the Wors Gen, which is just the 11 SN + BB so it makes no difference. Somebody like Chopper is nothing compared to them, at least not at this point of the story.
Ulti and Page One are comparable to SN ? Based on what ? Drake being a Tobi Roppo doesn't mean anything, as he joined the crew only 2 years ago and isn't interested in becoming an All Star anyway.
I know you said Drake would be nerfed because of the disease but there's no indication of the disease affecting character's strength negatively. It might even makes them stronger.
What i bolded parts are the exact problem i was specifying.
1. Chopper is not weak. Hes literally fought against enemies stronger or on par with Franky's opponents at Enies Lobby and Fishman Island. Yes, Oda has unfortunately shafted the character for "plot", but he is not nearly as weak as people here insinuate.
2. Hawkins is a Supernova, yet is not considered a Tobi Roppo. So apparently Ulti/P1 can't be compared to the SN even though they are 2 of the "Six Strongest Headliners"? I'm pretty sure Nami and Usopp are breaking this headcanon right now.
3. Supernova is a term Oda hasn't used in years, so im not sure how "important" the word actually is.
4. When exactly are they
supposed to get stronger? We are nearing the end of the series and fighting a Yonko crew. If Chopper can't surpass a Tobi Roppo member, how are we supposed to believe he will fight a Blackbeard captain relatively in the near future?
5. Again, if Nami and Usopp are doing it, why can't Chopper?