RW20
A 137m extension to take off field length at SOU would have very little effect on the performance of an Airbus A320 or B737-800 flying lounger than 2 hours at full capacity.
This issue is separate to easyJet trying SOU out. In my opinion this is not acceptable for BOH. EasyJet could potentially now serve all sorts of short-haul services from SOU instead of BOH.
Part of me thinks this is still fall-out from the Flybe SOU ransom holding when they operated from BOH.