The article is about the only two candidates left officially running, McCain and Paul. To particularly disfavor one strongly implies favor of the other.
McCain’s recent ACU rating is only 65, and it has trended downwards for quite some time. Between the two, McCain is measurably a good deal less conservative.
The article in question doesn't favor McCain, it talks about the fact that McCain has gained enough delegates to retain the nomination and the Paul's campaign refusal to quit, hoping for McCain to drop out. There is no policy debate in this article. If anything, it is a debate of math.