I see a lot of similarities. Both men were very much ego driven and even when Saul was trying to do what was right his ego kept tripping him up. It didn't help that the people were looking to him to fix everything. People figured then, like they do now that, looking to a man is easy. Real change happens when people are willing to get down before God, seeking his grace and his mercy. Then get up make a difference.
Saul had a noted inability to stand any rivals and that got him in even more trouble.
I could be wrong, but at some point character matters.
Thank you Brother for your considered contributions here.