And no, I don't contrive situations to make Canon sensors look bad, those situations exist everywhere, all the time.
I think this thread, and the multitude in the same vein, could use some perspective. Let's stipulate that dynamic range capability is the end all most important quality of an imaging device. Surely, then, god himself descended from the heavens to breathe life into my A7r.
Here's the thing, though. Its DR preservation is better: marginally. It's not significant enough to call it great and canon crap. It isn't different enough to change how I shoot. If I take landscapes, I still use grad ND filters. If I shoot bikini models on the beach in daylight, I still use reflectors and speedlights. If I shoot in a studio environment, I still use strobes.
If the A7r is great, Canon is pretty damn good. If canon sucks, it sucks a little less. The A7r facilitates better cropping when I can't achieve the framing I wish, but since I stipulated that DR is paramount, resolution is a side issue, and DR differences, while real, are marginal.