Coldplay is overrated. They have a few good songs, but that's it. They peaked long time ago. They copied Radiohead's The Bends style, then overkilled it, and now has little to fall back on. As for Radiohead, they just amaze me more and more with each new album. They're latest, In Rainbows is brilliantly original.
There's a general consensus amongst critics that Coldplay is finished. They have nothing new to offer.