Why do so many people including reviewers seem to pretend the 70D doesn't exist or is really really new by always comparing it against the 7D just to make it look that much newer and better?
(for the record I really like my 70D - it's just this almost goggles view to compare it with the 5yr old model instead and then say it's new ...)
Because it's even stupider when you say that the 7D2 is 2 percent better and try to justify that 2% as a ground breaking innovative game changing paradigm shift that completely changes photography as we know it.
I have shot for many years with a 60D... identical IQ to the 7D... A friend got the 70D and you could barely tell any difference. I have a 7D2 and it is hard to see any difference over the 60D until you go to high ISO. The AF system is an order of magnitude better, but you have to pixel peek and still won't see any significant difference in IQ for normal use.
As digital cameras mature, you will see less and less difference in IQ between revisions... everyone is approaching a wall.