[Hemingway's Ghost]

I'm a realist. When somebody does a cover of a song they frequently change the key, it's one of the things you do to make a song "your own", doesn't mean it's a different song just a different rendition of the same song.

My point was all those songs aren't the same chord progressions and constructions: they're all very different from each other. What you're suggesting is that they're all "Knockin' on Heaven's Door," but since Axyl Rose's voice is different than Dylan's, he sings it in A instead of E, or whatever. Such is very much not the case with the songs you suggested.

[discostu]

Cybercowboy777 made my point much better than I did, allow me to quote:
It is not about the exact notes or lyrics, it is about the formula. (thanks CC)

These are cookie cutter songs. Yes mechanically they are different, but that's just the mechanics. A cheesy lovesong is a cheesy lovesong is a cheesy lovesong, in the end they're all the same. And early in their career the Beatles were master of the cheesy lovesong.