I just set a new lowscore for Plaguebringer elite (judgement sword) with a 3 hero kill.
So yeah it updates. LET THE GAMES BEGIN!
And I just set one for Baron Smile. So this will be fun...except my stamina was sad enough without this new form of competition (a type that I LOVE, lol). Up to 4 #1 spots, though I am sure I will wake up to most of them being gone :P.