If Denethor hadn't committed suicide

[Eönwë]

Originally Posted by Erendis

In fact,don't you think Denethor and Aragorn make a symmetric couple?

As far as comparison goes, I would say that Theoden could be compared to Tuor (with a different ending) and Denethor to Túrin, only of course both are on a smaller, less dramatic (and tragic in Denethor's case) scale. However, they both get a message/guidance from the West (whether direct or indirect) and both react to it in different ways.