FRatSTN,
Given your handle, I'd suggest you are far closer to STN matters than I. However your closing comment re by your logic should that mean that FR move all their LTN and LGW routes to STN?' Ryanair has an immensely superior cost position to EasyJet, hence it can make its flying programme work at lower levels of demand and is pricing policy is designed to generate demand and grow markets, they also have very deep pockets coupled with a willingness to compete into they reign supreme. There are few examples of where they have ran from the competition. So an FR consolidation to STN not likely. The other two airports are very significant to FR. LTN keeps its toe on easyJet, quite a few strategically places routes their to keep easyJet off, like rak and mla. LGW is now the destination for one of Ryanair's busiest routes, DUB LGW will move to 8 daily from W16/7, and BFS to 5, so a very significant dot on Ryanair's map.
EasyJet has pruned the Stansted network consistly, and shifted routes to LGW where Ryanair is likely to show up... With Ryanair on GLA and EDI ex STN now ( 2 big STN routes for easyJet), we shall see easyJet's commitment to STN tested..