Max speed isn't the only consideration, of course. Almost all "supersonic" planes are effectively subsonic with a supersonic sprint capability, rather than bein

Max speed isn't the only consideration, of course. Almost all "supersonic" planes are effectively subsonic with a supersonic sprint capability, rather than being natively supersonic. Concorde, Tu-144, A-12/SR-71 and XB-70 are the only native supersonic aircraft I can think of. Everything else is to some extent optimised for lower speed, so using big engines to temporarily overcome drag from a non-swing-wing design is consistent with that compromise.