Quant Questions Not Similar to Real GMAT

Hello everyone!
I bought the 15 Full Mocks to practice after taking the GMAT twice. I scored 620 and 630 in those attempts (Q43,44 - V32-33).

I managed to do 6 Mocks when I studied for 3 months to take my 3rd attempt. My scores were
680 (Q47)
690 (Q48)
670 (Q46)
700 (Q49)
710 (Q49)
680 (Q48)

I was VERY confident that my quant would be at least Q46, in the real exam, however I got a Q45 (!!!!!), I was devasted!!!! Honestly, I felt the Mocks were kinda different from real gmat questions, but I tought that because I had studied with Kaplan (TERRIBLE) and by myself, I taught that the questions were Ok in the end.

I managed to get 660 in my score, but I did not think that it is so good as 5 star review.