They just don't. Anyway, this album is not very good at all. The production quality of it isn't good, and half these bands don't even have their own albums. There is good reason for this, a lot of these bands suck. Artists are allowed to take a certain amount of liberty when doing covers, but some of these go too far, especially when you don't seem to be signed to a label.
One of these is "Macy's Day Parade". The original version of this song is acoustic and is about three and a half minutes long. The cover on here, in my opinion, makes a mockery of it. They may have tried to make it different in a good way, but it doesn't work. "She" goes along the same lines as this as well.
The cover of "J.A.R" sounds like New Found Glory, but way more nasaly(I know, I didn't think it was possible either). Then there is "FOD". Another when they tried to make it different but fail to make it good. "Redundant" sounds nothing like the original; during the verses, the singer sounds like Trent Reznor on "Hurt", especially the opening one. Plus they changed up the guitars in a wierd way.
"Minority" is missing the harmonica, and the singer isn't a good singer. However, they did get the music the closest. "Going to Pasalacqua" is just sad. "Christie Road" sounds like an even worse version of Hoobastank. And, Weezer, if you're going to do a cover, you can't just change the words. If you don't want to swear, then choose a different song.
And don't listen to whoever said Avril Lavigne did a good cover of "Basket Case".