SAT practice test(s) difficulty vs. real SAT?

I’ve done several practice tests that CollegeBoard has released for the new SAT, and I was wondering how they measured up to the real thing. Are they easier/harder, and are the practice tests accurate depictions of how I’ll do on the SAT?

They’re pretty much the same.

How did you do on the practice tests?

I usually score around a 1400, give or take.