Barbosa and Bell are both much better than Barnes.
Based on last year's stats, that is true. But several articles suggest that Barnes personal problems were a big part of what happened last year. In any case, big things are expected of Barnes.
http://www.azcentral.com/sports/suns/articles/2008/07/22/20080722barnessuns.html
"We're excited to add a player of Matt's caliber to our roster," said Suns President of Basketball Operations and General Manager Steve Kerr said in a release. "He has a chance to have a big impact on our team. His athleticism and versatility at both ends of the court will be important for us along with his playoff experience."
Barnes, 28, spent the past two seasons in a mostly reserve role with the Golden State Warriors. He collected a career-best 9.8 points and 4.6 rebounds in the 2006-07 season. Last season, he averaged 6.7 points and 4.4 rebounds in 19.4 minutes per game.
General Manager Steve Kerr and coach Terry Porter talked with Barnes by phone last week from Las Vegas, where the Suns were in NBA Summer League action. The team likes his shooting touch, ball-handling and big-game experience.