Kelly Clarkson or Leona Lewis?

Who's a stronger singer? Personally, I'd say Kelly. Leona can't touch her in terms of all-round singing. Leona's great, obviously, but Kelly has a strong lower register, which isn't something I can say about Leona. Not to mention the fact that Kelly has a much richer tone; her voice is so soulful and beautiful. It's hard to compare in studio, but Kelly's much better live, and she has way more stage presence and natural charisma. People just get excited over Leona because it's so rare that a really good girl singer comes out of the X Factor. Bear in mind that this coming from someone from the UK, and from someone who watched Leona dominate X Factor before actually getting into Kelly and American Idol, so I'm hardly biased.