Noticed an inconsistency in V3 API for putContact vs createOrUpdateContact regarding phone number

I noticed that the C3 postContact and putContact services both take an array of phone numbers with types (mobile, home, etc) yet the createOrUpdateContact service has only a single phone number field with no type.   How does that single phone number correlate to the multiple that can be sent with postContact and putContact?  Why not have an array of phone numbers w/ type in createOrUpdateContact also?