What the difference in model ripping between 3DS games?

What the thread title says. I would really like to know how 3DS model ripping changes depending on the game where the models are to be ripped.
I'm mainly asking this because it irks me that Super Smash Bros for 3DS has model rips, while an older 3DS game like Bravely Default has absolutely nothing at all.
Would really like to know. Thanks in advance!