Pocket 4 and Pocket 5 are one of the MANY QB motions in the game that don't actually work and are just the same as the generic motion. As you can see when i cycle back and forth between the 2, the preview animation doesn't get interrupted. Now let's look at Pocket 6 and Pocket 7. These are only 16/46 animations in the game that actually work, look what happens when i cycle between those 2, you can see the preview animation get interrupted and it actually loads in a distinct motion between the two.
See for yourself. Cycle through "Traditional 7" all the way through "Traditional 14". Every one of those will be the exact same animation despite being labeled differently