Doesn't the 90D have the same fps as the 7D Mk ii? It really out specs it on all fronts except buffer, build and ergonomics/button layout.
I'd like to hear from shooters who had extensive 7D2 experience and then made a lateral move to the 90D and could tell us about the AF speed and accuracy, the buffer difference and keeper rate.
The 90D AF system is somewhere between the lower grade 80D AF system and the 7D Mark II AF system. But where it really counts - AF accuracy and shot-to-shot consistency - it's much closer to the 80D than the 7D Mark II.
They did add "Single Point Spot AF" and "iTR" to the 90D, but did not give it "Single Point with 4/8 AF Assist points." It has the same 45 AF points as the 80D. Both the 80D and newer 90D have more f/8 sensitive AF points than the 7D Mark II (or 1D X and 5D Mark III, for that matter), but less than half as many f/8 sensitive AF points as the 1D X Mark II and 5D Mark IV.
The 7D Mark II has a near 1D X/5D Mark III level AF system that is at a higher level of accuracy and shot-to-shot consistency than the 80D/90D. It's got 65 AF points and all are cross type.
A true 7D Mark III would be expected to have an improved 1D X Mark II/5D Mark IV level AF system with all AF points f/8 sensitive.
For me, the deal breaker is the 90D's 120,000 rated shutter vs. the 7D Mark II's 200,000 rated shutter (which my 4.5 years old 7DII is fast approaching) and the overall build quality of each.