User blog comment:ImperiexSeed/Danielle Panabaker confirmed/@comment-24152851-20170122081052/@comment-3423279-20170122081710

Except for those 20 or so years where Wally did insane feats of speed that Barry never got the chance to do due to being dead.

Granted, Wally never entirely stopped a cannon that was able to destroy five universes in one shot either, but Barry was unable to outrace Death.