The heading is basically all. The WorkCentre 7345 driver supports lots of things that are not supported by the WorkCentre 3225 printer. However, and that’s why this is important:
It (7345) is available for ARM architectures, 3225 is not.
Why is this important? Because when you want to run a small SBC to make that printer Wifi capable in a non-annoying way, you cannot use the Xerox provided ARM driver as it does not support armhf, armv7l and the likes that you find on many SBCs, like the Raspberry Pi or the Tinkerboard it is running on now.
