Your really twisting this fact.
Yes Humans because of heat management can outwalk any animals, but that's completely ignoring distance and speed, which means this concept and fact has no point, because its utterly useless.
Over X time, we will not out distance any of the other migratory animals.
Our speed is quite dismal compared to again any other migratory animals.
So we have no speed time or distance advantage to being able to outwalk.
Means its a pointless variable to look at.
Its not even comparing a tortoise and hare race.
Because in this case, the Hare will get to the finish line first, even tho it takes many breaks because of how much of an advantage it has in speed and distance.