Barth seems to effectively collapse all Christian doctrine into christology. The answer is Jesus – what’s the question? That seems to be his method of working, and, as far as I can tell, is pretty much right on. Christ and christology is pretty much it for Barth (and for a lot of guys who are in the same vein as he is – Torrance, Bonheffer, etc) – I’ve heard his method called christological monism before. Doctrine of election? Christ. Revelation? Christ. Word of God? Christ. I do not see a problem with this.