Honestly I would say that Lilith has a lot of clear advantages that DMeta doesn't have. Sure, you're gonna lack the x4 boost, but you'll be really consistent with damage instead-- and Liliths come paired with skills that boost devil ATK as well, which would be useful. That, and you don't have to worry about HP requirements, and in fact would have +1000 rcv every turn if both liliths are awakened-- AND an extra second to move orbs which would come in handy as well.
DMeta's big advantage is her monstrous stats and the x4. Also bindproofing, row enhances, and orb enhance skills.