Nash was a backup to a HOF point guard in his first 2 seasons & he never stood out until he became a full-time starter in his 5th season just like Dragic. They also became All-NBA guards in their 6th season when they were both 27. Their careers started to diverge in their 7th season w/ the acquisition of Isaiah which affected Dragic's usage rate but Nash also suffered the same fate in the 8th season w/ the acquisition of Walker/Jamison. Nash redeemed himself in his 9th season but Dragic is still in his 8th season & got traded midseason.....so we'll see how Dragic fares next season. I'm not saying he's going to win the MVP but he could be an MVP candidate ala Lowry if the Heat are one of the top 2-3 teams the East ala the Raptors.

On the other hand, JET/BK are similar type of players & I've made the comparison in a previous poAst. Unless BK dramatically improves his playmaking skills I just don't see him an a starting PG for a contender unless he's playing w/ a point forward(Bron) or a ball dominant 2 guard (Harden). If you look at their early careers, JET actually had a higher assist rate than BK at the same point of their career & JET even averaged over 7 assists in his 4th season good for 6th in the entire league. You also have guys like Devin Harris who had similar playmaking skills & eventually became combo guards. The Suns basically traded for BK to be a combo guard as Bledsoe is the starting PG.

As far as their career trajectory, both BK/JET started their careers as starting PGs on mediocre teams & although productive they were both eventually traded away to another team who was looking to fill a void left by a former All-NBA guards. JET became a combo guard in his 3rd season w/ the Mavs while BK is basically going to be a combo guard as long as he's playing w/ Bledsoe.

Another thing JET/BK share:

JET: http://s3.amazonaws.com/br-cdn/temp_images/2013/10/25/LeBronTerryDunk.gif
vs.
BK: http://assets.sbnation.com/assets/2300537/deandrethunderdunk.gif