Nikon only builds consumer cameras and pro cameras. There isn't much difference between their pro models for things like weather sealing, metering and auto focus. The top of line D3x - 51 focus points (including 15 cross-type sensors); AF fine tuning possible and the bottom of the pro line D300s - 51 focus points (including 15 cross-type sensors); AF fine tuning possible. Canon would never do this, they worry about cannibalizing sales. And this is why a 7D will never be as good as a D400.
I think the reality is more nuanced than you admit. I don't see Canon ever having the rather x0D-ish "prosumer" tag to the 7D. The USA website's page for the 7D marks it for "serious photographers and semi-professionals." They want to have an APS-C camera for professionals, not just because APS-C chips are cheaper, but because the format offers extra reach with lenses. Somebody with a 5D or 1D series body may carry a 7D around as a second body, and Canon doesn't want to punish them for their purchase. The x0D line has been repositioned from semiprofessional or "prosumer" to "advanced amateur," though I don't see tons of changes myself, aside from the addition of a lot of new features and less emphasis on the old points that were thought to constitute a "pro" camera but which weren't adding new functionality (i.e. the magnesium alloy body) or advertising bullet points.
Other than that, I don't see your autofocus comparison providing your argument much support. Number of AF points has seemed to be going in Nikon's direction for a while - compare the D7000 and the Canon 60D, for example; the number and types of AF points was seen as a point in the D7000's favor there.
The comparison is very simple.
The APS-C Canon 7D "19-point all cross-type AF (f/2.8 at center: Dual Cross Sensor)." The Canon 1D IV "All 45 AF points are horizontal-line sensitive at f/5.6 (vertical). Thirty-nine of the 45 AF points are vertical-line sensitive at f/2.8 for cross-type focusing."
The Canon 7D does not use the same focusing as the Canon 1D IV.
The 5D II "9 AF Points (1 Cross Type) + 6 AF Assist Points." The 1Ds III "45-point (19 high-precision cross-type AF points plus 26 Assist AF points)"
The Canon 5D II doesn't use the same focusing as the 1Ds III.
On the Nikon side the APS-C D300s, the full frame D700, full frame D3s and the $8000.00 full frame D3x all use the same 51 point focusing.
What's so hard to understand? Canon down grades the focusing for their lower cost cameras, Nikon doesn't. Simple as that!
The above may make little or no difference to you. Many 5D II shooters only use the center focus point.