Right before this one starts, there's some interview footage of Noel talking about how he never expected to fill Earl's Court then someone comes up to him and says that it's already sold out.
Then, it cuts to the Earl's Court stage and Liam saying, "That's supersonic, eh?". The music starts, Liam goes up to the mic again and says something like, "Don't help if mad or sane 'cos you're sane all being the same."(again, some gibberish. i'm just trying my best at translating it into coherency.) Then Liam goes up to the mic and starts singing. Right after he says, "You make me laugh." he says, "You don't really though!" Everything else goes prettymuch as planned. After the last "No body can ever hear him call" of the second verse, Liam goes down to a lower level of the stage and starts staring and waving at the audience. When the song finishes, Liam says, "We're gonna blow your fooking heads off! And mine as well." Then he does some kind of funny little dance-thing with his tamborine, then goes back up to the mic and says, "This one's called Hello!"
I would say that this version of Supersonic is better that the Definitely Maybe album rendition. But it could be said that that would be like comparing apples to oranges. I don't know. Still great(by the way, this is my favorite song).