Ranieri replaced Gian Piero Gasperini last week and opened his Inter career with victory over Bologna.
Moratti said: "Yes, of course, [the performance] went very well. Everything seems to be back to normal.
"Yes, I think [Inter are more rational]. More rational in the sense that it is more like their normal way of playing before.
"[Gian Piero] Gasperini might have been able to find that sort of normality further ahead but it was too much of a risk."