There’s no form of decoherence which is equivalent to ontological collapse, to actually snipping off branches. (Penrose has a nice discussion of this somewhere). So decoherence as an interpretation can’t be saying anything different to what MWI says as an interpetation.. Decoeherence just gives an criterion—albeit a fuzzy and subjective one—for world-formation.
There’s no form of decoherence which is equivalent to ontological collapse, to actually snipping off branches. (Penrose has a nice discussion of this somewhere). So decoherence as an interpretation can’t be saying anything different to what MWI says as an interpetation.. Decoeherence just gives an criterion—albeit a fuzzy and subjective one—for world-formation.