According to wikipedia, Justin Bieber is twice more popular than One Direction.

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Justin BieberOne Direction 1 244 405 total views 615 649total views

During the month of April 2017, the 131 articles about Justin Bieber have been consulted 1,244,405 times. The 87 articles about One Direction have been consulted 615,649 times.

For Justin Bieber, the most consulted versions are :
  1. Justin Bieber (en) : 482,914 visits
  2. Justin Bieber (es) : 220,217 visits
  3. Justin Bieber (pt) : 77,701 visits
  4. ジャスティン・ビーバー (ja) : 69,426 visits
  5. Justin Bieber (fr) : 47,621 visits

And for One Direction :

  1. One Direction (en) : 301,391 visits
  2. One Direction (es) : 52,486 visits
  3. One Direction (ru) : 29,229 visits
  4. ワン・ダイレクション (ja) : 27,839 visits
  5. One Direction (fr) : 26,737 visits