It would certainly be bad news for BHX but I always thought that Thomson's real beef with BHX was more to do with landing fees rather than runway length
Quite true, BHX has a runway length of 2605m while say Cardiff has a lengnth of 2392m and CWL has 3 weekly Orlando flights One to POP and one to CUN with TOM on 767-2/3er so i cant see the runway being a problem. They also are not the only long-haul CWL operators. XL, Mytravel, Zoom to canada so its obviously the landing fees.