In terms of business aviation yes GLO has a much higher number of movements. But for scheduled operations PLH would by far have a higher number of pax: 2 based aircraft rotating through PLH throughout the day, 50 seats per flight compared to 19... it all adds up.
Its true that business aviation brings in more cash, but wouldn't SHH have pulled the plug on the ASW base and PLH itself a long time ago if it were that unprofitable?
If OXF can model themselves on GLO with the right mix of business aviation to scheduled ops they could do well... But as I mentioned above it is a very niche market that they will have to fight for.