unupped stalls and upped stalls are very different things.
unupped rushes will probably be able to defeat an unupped stall because of the fact that unupped stalls take a while to get going.
upped stalls are a different matter. they are evenly matched against upped rushes.
my favorite unupped stall deck is rush be gone, and anyone who doesnt say it is frustrating to go up against is lying.