Special:Badtitle/NS90:Forum:Trope Talk/The Matchmaker vs Shipper on Deck/reply (8)

That would be better. To differentiate a step further... a shipper's main quality is being enthusiastic about / praising a (real or imaginary) relationship. And in the latter case the relationship is not necessarily exactly "romantic".

But however we can put it, the main difference is that the first is about in-universe reaction and the second is about activity.