I would dare say that(subject to actual use not showing inherent failures) that the 90d is the best all round crop sensor DSLR ever made. The best 'Jack of all trades' so to speak. I can't think of anything that is better.
Based on the specs (....) I tend to agree with this.
But the original question was "
Do you think the 90D is superior to the 7DII?". And for several reasons the 90D, being a superb allrounder, cannot match a 5-years old specialist like the 7D Mk II.
The main reasons that the 90D cannot even match the 90D
as an action camera have already been mentioned in several earlier posts:
-ergonomics of the controls on the body
-customization, in particular the AF-system
-properties of the AF-system (e.g. number of AF-points, AF Point Expansion)
-durability of the camera body
-shutter life
All these properties make a difference when shooting fast moving subjects in changing circumstances (light, weather).
Off course, lacking these do not suddenly make the 90D useless in such circumstances, but they sure help you get the most from each situation that is thrown at the photographer. And in action photography you generally cannot influence the environment (lighting etc) that much.
But I think it is relevant to add what is more important for many 7D Mk II owners: the 90D is
no improvement over the 7D Mk II (except for the DR if recent rumors prove to be correct). And an improvement is what is wanted by at least some of them: although a capable camera by itself, it is not the best cropped action camera around.
For me, the 7D Mk III would have been a no-brainer to purchase. It should have been technically possible for Canon to improve the 7D Mk II on DR and some of its AF-specifications (mainly accuracy for fast moving subjects and with subjects with less than ideal contrast). But it has become clear that Canon wnats to 'push' its action photographers towards either
Full Frame DSLR or the
action-oriented mirrorless that will probably be rumored soon after the excitement about the 90D has subdued.