124 Votes in Poll
The two have not been officially gauged against one another so there is no correct answer to this other than "we don't know".
Who deleted my post?
@Tupka217 technically Wally is faster than Jay in Young Justice and general 😓
Jay because in bloodlines he had to save wally from that energy wave
That was Bart and Barry
And I think their the same at least in the show
If you read the wiki pages on their abilities, the answer would reveal itself.