A massive improvement on the Bravo that played for us last year - but let's remember - Bravo was world class before joining our side - a superb shot-stopper, excellent on the ball.
For whatever reason, Bravo completely fell apart once he joined our side. But unexpected collapses happen to keepers for some reason (Ceasar, Casillas, etc.).
Add to this... Ederson is likely playing the best he's every played in his career - supposedly one of his drawbacks is lack of composure on the ball - so far this season, his composure on the ball has been excellent - better, probably than Bravo at his peak.
So yes - a huge upgrade on last year's Bravo - and a upgrade nonetheless even if Bravo was in peak form given his performances so far.
But - Bravo was a great keeper, just not last year - hopefully he'll return to form.