Im a critic working for a non-famous magazine in the U.S heard about the boys through XFactor winner Alexandra Burke who also looks promising for great success but yet to find out. Anyway this perfomance really failed to impress me and like GrapeJuice mentioned their voices seemed rough at points and the dancing was cheesy and extremely fast compared to the style of the song. I would give the song 5/10 & the performanc 4/10. 'Ahmir' (who did not win American's Got Talent) are extremely talented compared to JLS, after few years Ahmir still havent recieved the deserved success compared to their talent. In my point of view JLS will last few more weeks in the U.S before they disappear.