Clash of the titans
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This week sees a battle to rival the greatest scraps in pop history – The Beatles vs The Rolling Stones, Blur vs Oasis, Victoria Beckham vs Sophie Ellis-Bextor – as Justin Bieber and Cheryl go head-to-head in a week-long race to reach number one in the album charts. It's third album time all round with Cheryl releasing A Million Lights and Biebs putting out Believe, and who knows which way the pendulum will swing?
Actually, science knows. And this is what it has discovered...