If it makes you feel better I can play sweet child of mine behind my head and you messed up some palm muting and strum patterns but from the audio I couldnt really render a full verdict. I also play bass, drums, violin, piano and the ukelele if it helps give me some weight to the scenario.
To play devils advocate. Skiba has been playing these songs for a few years now and like others and I agree with pointed out you have likely been playing these since picking up your guitar or listening to blink. Does it excuse Skiba no. But if you listen to Alk trio blink is vastly different in the way it plays.
bottom line, I think i can play blink songs better than Skiba or Tom on a stage however I wouldnt say im better than them. Playing the song you didnt write, singing the words you didnt write infront of a crowd who knows you didnt must be a daunting experience regardless of how its perceived. Matt has never been a huge stage presence. He plays his material has a few words and gets on with it. He isnt Tom, who will play the song, ad lib the interludes with new things he likes and then joke about how he fucked it all up.
Oh i also play a mean Ocarina.