JTSB
Often said but not necessarily completely accurate. There is a significant difference in the runway performance of the SFP compared with the "standard" 738. The majority of European 738s are the standard model, certainly in the case of the UK operators - I suspect there may be few SFPs in Europe so people may have tended to discount this possibility.
But you may be right about the A320. It was the report that FR had recently acquired SFPs that grabbed my attention.