Repair wise, he barely indicates that Canon has the edge over Nikon. They both have 5 lenses/bodies on the list, but Nikon does show up higher on it on average. The repair cost & time of Nikon service is somewhat higher.
He does use "Nikon fanboy" a lot - probably some personal experience there he is talking to. Reading between the lines I think he has a bit of a grudge against Nikon because they stopped selling repair parts to him and raised prices.
As far as I can tell Canon has somewhat better reliability and repair service, but it doesn't seem to be enough to get excited about. As usual Canon and Nikon are more or less neck and neck.
By the way I'm all Canon and will never buy a Nikon.
When talking to friends about DSLRs, I always favor Canon, but if they're not going to Canon, go with Nikon; community size and availability of used lenses (not to mention available options) is on par.
That said, I have to 100% agree with Roger on the fanboy thing; it's starting to die down here, but man it got nasty and irrational.
Good find marekjoz, I love reading Roger's stuff. Before making any purchase decisions, I always read up on what he and neuro have to say; I'm rarely disappointed after making an informed decision.