Yes, One Direction has surpassed the commercial peak of Justin Bieber, because One Direction has more lasting credibility. One Direction will not be the blip that Justin Bieber is. Justin Bieber only appeals to young girls. One Direction has a wider fan base and more substantive musical appeal. Is is more commercial than Justin Bieber.
I believe that One Direction have surpassed the commercial peak that Justin Bieber reached in 2010. First of all, their rise to the top was a lot faster than Bieber's. Bieber was a star on YouTube before he became famous. His first single, "One Time," took time to rise up the Billboard charts, and it only peaked at a modest #16. His second hit "One Less Lonely Girl" was also a slow burner. It was his third hit, "Baby", that turned him into a pop culture phenomenon.
One Direction formed on The X Factor, and was popular in the UK for about a year before they started to take off in the U.S. Their first album sold 175,000 copies in its first week and topped the US Billboard 200. They also had a massive first hit with "What Makes You Beautiful."
One Direction have also surpassed Justin Bieber's YouTube subscriber count, being ahead by 2.5 million subscribers and second only to Rihanna among VEVO acts.
They've also done better in the Teen Choice Awards than Bieber has. They won all nine of their nominations. Not only has Bieber lost twice to One Direction, but he has losses to the "Twilight" Cast, Zac Efron, Carly Rae Jepsen, Ian Somerhalder, and Demi Lovato.