It's a dialect continuum, so the boundaries are going to be somewhat arbitrary.  But for some odd reason, the dialectological work necessary to minimize the arbitrariness doesn't seem to have been done in India, and right now this seems to be a particular problem with greater Punjabi.  I have come across apparently RSs that treat Saraiki as a language, though most seem not to.  I could care less, personally, I just revert people because the argument seems to have more to do with politics than with language, and because it's being argued through ranting and edit warring rather than sourcing and serious discussion.  It's currently at "dialect" because last time there was a real discussion, those advocating that side were more reasonable and better sourced, but that could change, and I'd have no objection if it did.  —