I'm really fussy about my craw baits and I divide them into two basic groups. Realistic and flappers.
I put the MadDad (especially the 3xl that I like) in the realistic group. When fished the claws stick out and float upwards like the defensive position of a real crawfish. The do flap a little bit but not excessively. The MadDad 3xl is one of my favorite baits fished on a football jig, on an Arkie or Texas rigged. It's a darn near perfect imitation of a crawfish (or crawdad where I grew up!). It works ok as a trailer, but that is not where it excels.
The other group of 'craws I call "flappers" and I use them on the back of swim jigs. Bob's Tackle Shack's (formally a bait from BassTackle) 702 Craw is the best flapper I've seen. I have the 2.25" Craw Trailer and I love that bait as a trailer, but I'm not keen on them if I want a realistic looking bait. Real crawfish don't flap their claws.
I'm probably over thinking it....but that's why there are hundreds (thousands?) of craw baits to pick from!!!