For checkrides, especially an ATP part 121 checkride AQP is probably better. It's divided into two sim sessions, an MV (maneuver validation) and a LOFT (Line oriented flight training.)

The MV is a train to proficiency session. You are typically allowed three unsat maneuvers provided you get them right on the repeats. And the evaluator can train you and teach you how to do them correctly. In the MV you do various approaches, single engine work, V1 cuts, stalls, steep turns etc. Now the nice thing about the MV is if you bust, it's not a PINK slip checkride bust. Because under AQP the actual checkride is really the LOFT. So if you bust the MV you won't get signed off for your LOFT until you've had extra sim time.

The LOFT is a simulated real-time gate to gate flight where you will be expected to perform your duties as you would in a real flight. So preflight, paperwork, flight release, W & B all have to be done correctly. You will probably get a small and easy to manage malfunction, a hold, and a missed approach. But again it's all real-time, no slewing and the evaluator does not speak. In some ways the LOFT is much easier than the MV but in others it's tougher because of no do-overs.

The traditional checkride is basically a loft will no allowances for incorrect maneuvers. It is not train to proficiency for the ATP checkride, only for an SIC checkride for candidates who already possess the ATP is it TTP. So, as with the MV it must be flown to ATP standards and you really don't have much breathing room for messed up maneuvers.

Ground school under AQP is fast paced and intensely challenging. You have much less class time to learn systems and limitations, procedures and flows. And AQP ground school typically gives closed book exams for both systems and limitations though the programs vary from carrier to carrier.