What? Why? Either way,the answer is no.>>179352896
Why are you so curious about 21's performance anyway when she's not quite canon yet? And even if she were, the rankings were chosen based on who would sell and who people would watch, not alot of people would tune in for 21, through in my personal opinion, if they really wanted to ditch someone for Freiza it should have been Tien, he's as worthless as Yamcha and it's clear japan doesn't give a shit about him at all considering that in the anime he had to resort to the four witches just to pull a suicide move, he got beat up in his own recruitment episode and in the manga he didn't even get to hurt anyone, Frost laughed at him and casually smacked him out.
Also, 21 can't really be a majin because she's got a tail and has elf ears and hair where as Buu has no ears and future female buus don't have ears, they have those weird openings like Cell did and Buu have, at least Kid Buu and Super Buu