The Scottish Saltires bowled England out for 365 after achieving their highest one-day international score of 371-5, as Calum MacLeod batted 140 not out from 94 balls to wrap up the win for the Grant Bradburn's side.
England sit first in the ICC ODI Rankings, and Hussain believes that the team are completely different to the one that lost to Ireland and the Netherlands in the past.
"Those sides that lost to Ireland or whatever, they were sides who were bluffing their way through tournaments a little bit, changing just before tournaments and not really knowing how to win," he told Sky Sports News.
"This is a different side, this is a side that just needed a little knock at the knees, a little kick up the backside to say, 'yep, you're No 1 in the world but if you don't do your skills well, any side, even ranked 13 in the world, can beat you.'"
Sunday's result was Scotland's first win over England in their last five ODI clashes.