I noticed that too when I was listening the album on my car. That song remembered so much to Good Riddance. Since a time ago, there are things on Sum 41 that reminds me of Green Day. But that's cool, cause there are lots of things that reminds me of Metallica too. Are just their influences.
I think there is a huge over-reaction going on here. They are not nearly as similar as some of you are making them out to be.
Adam (Open Your Eyes), Amy (Mr. Penguin), and Sasha (Young,Dumb,And Full Of Cum...) are my noobs.
Claudia is my grand-noob.
Lisette (bunny) is my great-grand noob.