As does the fall of Vicksburg a day later. It's amazing what a little publicity and a presidential visit can do to boost a locale's place in history.
You know, had Lee won at Gettysburg then that battle would be as obscure to most people as Chancellorsville is, and legions of school children would have had to memorize Lincoln's Vicksburg Address.
I guarantee there are folks who commute to work on route 3 (the Plank Road) every day and if you asked them about Chancellorsville they'd give you a blank stare.