SEO is a practice not an application feature. And it's not even entirely something that just your CMS would be involved with in the first place.
Is there something more specific you're concerned about that could be addressed more directly? This question's incredibly wide. Any CMS worth serious consideration should be perfectly capable of handling anything you may need to do on-site for SEO, either via core features and templating or maybe an already well-known plugin if it needs to be bolted on.
As examples, Movable Type has very few plugins that would be considered as being "SEO-related" because most of the things that would entail are in its paradigm just handled via template modifications. WordPress has probably hundreds of them(literally), meaning any significant comparison table would be near-useless just because of its mass, and because there are a few obvious front-runners in use like the all-in-one pack, platinum pack, and Yoast's, that mostly do the same things but in slightly different ways or interfaces.