Do you think the Dallas Mavericks would win the championship if they didn't trade steve nash to the suns?

Many experts think that if the Dallas Mavericks didn't trade steve nash to phoenix there's a possibility that they would win a title in the nba.., They think that trading steve nash to the suns is the big mistake the mavericks management has ever done.., look what the dallas mavericks done after they traded steve nash.., ok!! they hire avery johnson and they went to the finals against the heat in 2006.., which they lost in 6 games.., the following year they finish 67-15 seeded no.1 ( best record in the nba )., unfortunately they lost to the golden state which seeded 8 in the west in the 1st round of the playoffs., Then in months before the playoffs began in 2008 they acquire jason kidd.., hoping that this would change the fortune of the mavs.., but it didn't work as the mavericks eliminated again in the 1st round for the 2nd straight year.., they were eliminated by the new orleans hornets (4-1). after that loss they fired avery johnson and hired rick carlislie as a new head coach.