None of this is neither here nor there. The fact of the matter is, every photog has a differing set of needs. These new Sony developments will be perfect for some and not so much for others.
Assessing these new bodies and coming to the conclusion that they will inevitably replace the current form of DSLRs or render Canon bodies obsolete merely exhibits a lack of understanding of EVERY shooter's needs and a very narrow perspective. No one here can possibly account for all the variances of work or preference that exist out there.
The A7 and A7r will blow many people away. Conversely, they are still flawed in many ways that make them impractical for many applications such as AF speed with EF lenses, a max flash sync speed of 1/160 (a huge deal to those who shoot anything other than natural light), 300 or less shot battery life, amongst other things that may or may not be found as they start to get into people's hands.
Either way, these bodies are huge advancements in technology and the mirrorless market. I love that they exist now, and I too am on the fence about getting one as a completely separate kit for working on personal projects with specific lenses (wouldn't make sense for me as a second body for paid work). However, there are still major issues that need to be resolved before it could be viewed as what is going to completely destroy the Canon user's need for their current DSLR or the general DSLR form factor as we know it.