the real point is that Emirates are steadily increasing their services into UK regional airports whereas BA are cutting back
Apart from LHR any of the airports currently served by Emirates can take another service per day or they can just up the size of the aircraft - at LHR it just means more A380's
I guess most interlining traffic at Amsterdam is Europe/N African bound, Paris Africa , Madrid, S America whilst Dubai is steadliy becoming the main choice if you are heading into Asia & the Middle East