CFAI Mock Exam Vs. Schweser (GMAT Comparison)

For those who ave taken the ManhattanGMAT exams and the GMATPrep exams. Would the CFAI Mock Exams Vs. Schweser be somewhat of a similar comparison. MGMAT exams have more difficult math questions that can be calculation intensive where GMATPrep does not. I’ve heard Schweser is calculation intensive. So that is why I drew this comparison. Thx.