(dou) : generally,it has three means.1, all 2.even 3.already
(ye): 1: the same thing 2.the same result 3.even 4.euphemistic
In degree , (dou)'s tone is strong than (ye), but sometimes, they can exchange, coz they have the same means.
In your example, I think they can exchange,both ok.For tone , (dou) is power than (ye)