I have not sat for the exam yet, but from everything I’ve read those are very comfortable scores for you on the CFAI mock.
I just took the CFAI mock for the first time today after going through three Schweser mock exams. I was typically getting 78-82% on the Schweser mocks and got a 75% and 77% on the CFAI mock exams today. I found the Schweser mocks to be easier and generally they have a lot of “repeat” type questions (ie, might have to present value a bond 3+ times on one mock) to emphasize the importance of that concept… but those concepts were not emphasized on the CFAI mocks so that might be a disconnect. Also, the CFAI asked 2 or more questions on at least two terms that I have never seen in Schweser - after doing 2500 QBank questions and 3 full mocks. This was somewhat surprising to me. I’d say the materials were more different than I was expecting, with the CFAI being a bit tougher (which I did expect).