@CompleatBeet I'm going to make an argument for Legends here. I'd say given the right situation most Legends could beat a pilot because even tho they have near super human abilities, Legends have...abilities lol.
Let's start w/ Gibraltar: Strong defensive Legend who doesn't slow down when being shot, can take additional damage & has an arm shield so he can take a lickin, but he's also strong so I could see him beating a pilot under the right circumstances. Plus he might have the best defense/offense against a Titan with his dome & air strike.
Caustic: If he gets a pilot in an enclosed space with his traps plus ult, it's over.
Bloodhound: w/ their tracking abilities & Beast of the Hunt which enhances their speed & agility, not only could they see the pilot 1st. They can quickly take them out.
Octane: they have metal legs & maybe if he's crazy stimmed up could pull it off, but his heart might explode in the process lol.
Wattson: With well placed fences can slow a pilot & take them down with the right weapon. Also has just as good defense against Titans as Gibby w/ her ult.
Crypto: with a well timed EMP can short out all the pilot's gear & finish them w/ the right weapon.
Rampart: decent defense with her walls. If she gets a pilot in a narrow area w/ Sheila, it's done.
Horizon: Blackhole...nuff said
Fuse: Can literally blow them up.
Valk: daughter of a pilot with a Titan for a jetpack so I'm sure she could hold her own.