2b>5cc is safer as far as proration goes, but bluebeating a combo that 2b>6a doesn't connect on seems kinda bad.
I say because I've been trying to figure out what to do after I end a long corner combo. If I end with 5cc> JB> corona, then if I 2b it'll catch them if they don't roll or if they roll. Seems a little tight, sometimes bluebeats, sometimes picks them up for a fresh combo. but by that point, 2b>6a can be teched.
But this doesn't work too well for me. if they neutral tech, I'm at a disadvantage. if I get a blue beat combo. JB > JD doesn't work. 2b>5cc> PF would work but if I was going to PF I'd normally have already done it. Usually ends up with them teching mid air and getting out of the corner.. hmm...