JD has a great layout, but the rules are basic and don't make use of it. So many shots you're never incentivized to hit. MB only requires two shots (drops and left ramp) and you can even get to wizard mode through MB (which is really weird, like they just ran out of time to code in anything else). The modes are fun but unbalanced and ignorable, and the whole crime scene system is worthless. Entire game needs a major balancing pass
JM's layout is more of a normal fan layout, but it's got a lot of cool rules regarding the lock matrix, jackpots, throwing spikes, spinner, bonus, etc.
JD has better theme work though. Great music, etc