Could Quicksilver beat the Flash? In the 1996 crossover, the scarlet speeder was able to very quickly (no pun intended) dispatch Magneto’s son in a hurry (pun intended). But was that what would really happen if these two were to get into a fight?
Let’s look at their top speeds. Flash can travel at the speed of light; Quicksilver can only break the speed of sound. This gives the Flash the advantage, as he’s still quicker than his opponent, without going full tilt. And being one step ahead of Quicksilver is certainly an advantage and probably the deciding factor if these two were to be in combat.
But if the two of them were in an even fight, with Quicksilver not being able to use his mutant power and the Flash not being able to tap into the Speed Force, things would be a little different. Flash seemingly doesn’t have any significant hand-to-hand combat training, and I’m sure that Quicksilver has, being part of all the black ops teams he’s been a part of over the year.
So we’ll say it this way: in a race and the open world, the Flash. In a boxing ring, Quicksilver.