Mourinho said: "The game changed because Inter are different from last season. Both teams played with the ball to feet and gave the initiative to the other side, as both are strong on the counter. We scored the first goal and from then on it was one-way traffic, there was simply no match.
"We played with a completely different philosophy to last season and in a way I'd never seen Inter play. I like to win, but I also like to play good football and this team can achieve that. We played badly last week, it's difficult to tell in this sport and you never know what will happen tomorrow.
"The characteristics of these players means we have got to play ball to feet. I won't say we exactly worked out the first goal in training, but the concept of having the striker and midfielders pushing forward to combine is something we did study.
"Now there is the first Champions League game against Barcelona and we can get a picture of what we can do in that competition."
New signing Wesley Sneijder was not originally in the squad as his international transfer only came through late last night, but he was thrown straight in at the deep end.
"Sneijder is a talented player and I knew it was a risk, that if we lost with him playing then I would be called a disaster and insulted by the critics.
"He did very well, so did the team and he unites the midfield with attack. This is why today I am a fantastic Coach and last week I was dreadful," joked Jose.
"I knew for the last 24 hours that Sneijder would play, ever since [director Marco] Branca told me he was available."