I'm not sure with the similiar part there, dude. If you listen to "War" by U2 and compare that with "Parachutes" by Coldplay, the gap is huge. I mean, totally huge. "War" is just a raw and powerful anthemic post-punk album filled with marching drums and propaganda snippets while "Parachutes" is a mellow, soft and safe album.
And if you're going for the height of their success, comparing "The Joshua Tree" by U2 with "A Rush of Blood to the Head" by Coldplay is basically another wide gap of difference. "The Joshua Tree" has that radiant aura of spirituality with every song they play; a distinct melody in each from the echoing chords of "Where the Streets Have No Name" to the bombastic bass lines of "Bullet the Blue Sky" and haunting melody of "With or Without You." "A Rush of Blood to the Head" has a very sleek tone to it and not as soft as The Joshua Tree and there isn't much spirituality prevelant within the album, but instead, it's more of a melodramatic piano driven album with aspiring rythms from "Clocks" and angst ridden songs like "The Scientist" and "Amsterdam".
And if you're going to even compare "Achtung Baby" by U2 and "X&Y" by Coldplay... "Achtung Baby" basically leaves the latter on the mud. If there is one U2 album that "X&Y" surpasses, it's probably either the experimental "Passengers" soundtrack or "October". Though I'm not sure about October since I haven't listened to the entirety of the album. And the fact that separates U2 and Coldplay is the theme of each album. Whether it be religion, teenage rebellion, Media overload, or just spirituality, U2 has everything covered. Don't get me wrong because I listen to Coldplay they're still pretty good. But as I'm reading the posts about people liking Coldplay and it's probably because most of them never listened to even the best U2 albums...
I think I've ranted enough...but I can't help when comparing albums... XD