The campaign of Skate 3 was designed with online play in mind. I am a huge Jason Lee fan and thought that his performance was excellent and I am sure if you are new to the series you will find his tips very helpful. One thing that I got a real kick out of was how they have Jason Lee playing Coach Frank to teach you the basics. Instead, they have spent the development time just refining the game and making it overall better.
That to be fair was a good decision as Skate 2 really nailed the gameplay.
To be brutally honest with you EA did not change a whole load of stuff from Skate 2 with Skate 3.