Excalibur couples may battle just as much as other couples (and participate in more than their fair share of public huffs), but they look so good together, it outweighs any other deficiencies they may share. It isn't that they're classically good-looking, or similarly sized (though certainly both those pairings are permissible). It's more that the aesthetic chord they strike satisfies in profound ways. Like gorgeously plated food or song filled with unusual harmonies, the wan and freckled hand-in-hand with the tragically tan, the pigeon-toed with the duck-walkers, these Excalibur couples achieve such perfection in their pairing that reminds the world that anything is possible