Yeah, he's just like Tony Allen. Only difference is he's not good at basketball.
Tony Allen is much more valuable, but they still the same player. Overactive tweener guards who play bulldog defense, can handle the ball a little bit, and score on drives and cuts, but can't shoot for shyt or run the offense.

What did Ridnour have in common with Nash other than being short white point guards? Ridnour couldn't score or run the show offensively and was not efficient whatsoever, which is what Nash was known for.
What do you think kept Ridnour in the NBA for 12 seasons and 500 starts? He was an ass defender, couldn't score inside at all, and wasn't an elite 3pt shooter. Ridnour lived off of running the offense and hitting midrange jumpers.
Ridnour was an incredibly talented distributor, I remember at Oregon they used to compare him to an orchestra conductor. He showed some of that in the NBA too, but the issue was he was too small and unathletic to get separation from defenders and off all the passes he needed to. But the talent was there, that's what kept him in the league.
And on top of that Ridnour was an elite midrange shooter for a guard. For his career he was 46% from 10-16 and 45% from 16-3pt (Nash is 47/48). Look at this breakdown - he was leading all point guards that year, pretty much the same attempts and % as Nash:
Who Are The NBA's Most Valuable Mid-Range Shooters?