"It was an enjoyable game between two great teams playing good football," he told Tuttosport.
"Roma were more incisive and deserved their passage into the next round. But has it reopened the championship race? It was never open! Juventus, technically and in terms of how they play, are superior to all of the others.
"It's a championship in which everyone else is playing for second place - as first place has already been decided."
Ferrara has also coached Sampdoria and the Italy Under-21s.