RJ was playing 20 MPG the instant he got to LAC. They had a role for him right away. They brought Kennard in the next summer, but IMO that's not the same as Dunn because they brought in someone different at the same/higher level. That's where the biggest difference lies for me. Dunn is on the fringes whereas Reggie Jackson was a well established starting PG (with a big contract to back it up). The Clippers were stacking their roster with proven rotation/starter caliber guys. Adding Dunn would be adding a player that's clearly below the players that are currently in the rotation. I don't believe he's close to Clarkson/Ingles, which is who he would have to take minutes from.
And again, I'm not saying players 10-15 don't matter or that it's not important. I just think it's significantly less important than the guys who play 30+ minutes and can potentially close games for you. The Jazz have a massive problem at that level. The problem/solution is our key players. For example, I don't think Gay replacing Niang is going to change much even though he is better defensively. But I do think Gay overtaking Bogey could change things. I think Gay could potentially be an alternative to Bogey, but I don't think Dunn is a true alternative to Clarkson. I doubt Quin would ever sit a healthy JC for a healthy Dunn. If we theoretically brought in someone like Justin Holiday....that level of player is someone who I think could be a real alternative to JC but for me Dunn is below that.
If Ryan want's to spend a boatload of money to have Dunn instead of the grab bag of young players (Oni, Brantley ect) that's his choice and it's not my money. But I'm not sure that's the better option. If the Clippers had dumped Mann for a vet that would have obviously been a big mistake. Mann doesn't happen if he doesn't have a roster spot. Personally, I'd prefer to have Oni/Brantley on the roster because of that potential. I think it's a better value add than whatever Dunn (or any other fringe vet) might provide for us.