While they are rulers in similar situations with similar prejudices, I feel that Thorin has what Thranduil lacks.
Namely, a spine.
Not to say Thranduil is a coward; canonically we don’t know when he was born but if he lived in Beleriand before the War of Wrath, as the movie insinuates, he saw plenty of battle. Elves remember things like they happened yesterday and if I had been fighting dragons and running from orcs I don’t think I would be eager to repeat the process, but Thranduil’s isolationist policy is literally the worst thing he could do for Greenwood.
Oh, sorry. Mirkwood.
Thorin, on the other hand, doesn’t have an isolationist policy because he can’t. His flaws are the same as Thranduil’s, essentially, but he’s forced to deal with them by virtue of the fact that he doesn’t have a forest to hide in. His mountain got sublet to a dragon.
So Thorin does what he can with what he has, and refuses to turn his back on what he feels is his right and the right of his people. Thranduil is perfectly content to live underground, thinking (somehow) that that will stop the rot of his forest. Thorin is not content.
One acts, one fumes. Thranduil has had a long time to see how the world turns and act accordingly, but like the Greenwood, the rot has set in. He’s unreasonable, arrogant, and short sighted. These flaws exist in Thorin too, but Thranduil has had that much longer to work on them.
I also have a dwarf bias when it comes to Middle Earth, because almost all of the problems the dwarves have ever had were the indirect fault of the elves.
The sacking of Menegroth? Elu Thingol refused to pay the fee for the fixing of the nauglimir, and the Silmarils were enough to drive anyone mad.
Destruction of Moria? They delved “Too greedily and too deep” (thanks for that moment of victim blaming, Gandalf.) what no one tells you is that the demand for Mithril wasn’t coming from the dwarves, it was coming from the elves. They were the single biggest customer base for that particular metal.
Various dragon attacks? The rings of Celebrimbor caused dwarves to develop wealth, dragons like gold. And- despite the movie’s claim that it was some kind of mental illness on Thror’s part- it WAS that ring in book canon.
tl;dr: Thorin and Thranduil are similar but Thranduil has been alive longer and should know better.