Originally Posted by Fat verbatim
Eh, all Ho-Oh really brings over Reshiram is a higher attack stat (and only by ten points) and better special bulk compared to the great deal of Special Attack and Dragon STAB that you lose out on when using Ho-Oh over Reshiram. Between a lack of bulk and limited STAB Meloetta is not going to be successful in Balanced Hackmons no matter how you play her.
@Ho-Oh - what it lets you do is focus on the physical side of things, although I guess you could still do that with Reshiram/Kyurem-W.
@Meoletta - the lack of bulk is a definite issue, but she's fast as hell, and Fighting STAB seems really good in the BH meta.