Baby monster may not be a top group of their generation?

SNSD, Twice and Blackpink all are top girl groups in their generation. so far, their successor groups didn't recevie same success as their predcessors. Both f(x) and red velvet didn't achieve same success as snsd even though red velvet considered one of the big3 in 3rd gen but still the gap between them Bp and twice is big. we can say about itzy and nmixx so now baby monster debut as a successor group of blackpink. I wonder how they gone fair in these regard they may get successful but i believe they may be not top group of their generation.