I think U2 and Coldplay are something completely different, cause they were born into two completely different periods. Coldplay are very young, they were founded in the late 90s, and being a newborn rock band in the 00s is different from being a newborn rock band in the 80s. I don't know if you see what I mean, but I think that we can't compare them, it would be the same if we made a comparison between U2 and Rolling Stones, they're from two different eras, the second inspired the first and so on...you wouldn't think of saying U2 stole RS crown or something like that, not because that's not true (this is not the point) but just because you don't dare to compare them, there's no need.