Isn't it established that in terms of digitals All known girl groups > All known boy groups except bts and sometimes exo?
Physicals NCT>Rv/MMM ( I don't know their sales but I bet it is like 3x less than NCT's sales)
Touring NCT>Both
Public recognition Both>NCT (What does it give the group tho?)
So overall, I guess NCT>RV/MMM
With only gp and small fandom supporting you, you could easily stumble with just one negative rumor tho.