VIENNA, Austria - He might have won the last three Formula 1 World Championships but Sebastian Vettel is not Red Bull's No.1 driver, claims team owner Dietrich Mateschitz.Mateschitz said Vettel's veteran team mate Mark Webber would continue to enjoy equal status in 2013.Mateschitz said: "When Webber has a strong day, he is a tough opponent for Vettel. He has a hard time against Vettel but the team guarantees him the same material and the same treatment."We are pleased to have two No.1 drivers."WILL WEBBER RETIRE?The fact remains, that Webber only has a deal in place for the 2013 season while Toro Rosso hopefuls Daniel Ricciardo and Jean-Eric Vergne are circling like sharks. Asked if he has a chance of joining the senior team in 2014, Vergne told RMC Sport: "It's too early to tell. Nobody is saying that Webber will retire in 2014. Maybe he will win races, maybe even the championship."For now there are too many 'ifs' about 2014."Mateschitz admitted that Mercedes had made progress over the winter and named Kimi Raikkonen as a possible dark horse for the 2013 title race.He said: "We assume that Red Bull will surely once again be among the top two or three teams." Stay with Wheels24 for the 2013 Formula 1 season – fresh reports every day.