No. A Bijuudama (any kind) is the formation of an 8:2 ratio of positive and negative chakra. Onmyoudon is the manipulation of 4 or more chakra natures (clearly incorporates Yin-Yang Release to the highest degree) that gives the user the ability to negate all other Ninjutsu; this is likely a large by-product of Yin-Yang release present in the make-up of the technique.