B format is totally different beast compared to pro logic. Pro logic is compression codec for data reduction and standard surround playback systems.
B format is something like m/s but way more complex. It can sound really convincing especially in ambisonics playback system. Decoding is based purely on maths so both hardware and plugin is good, I would use hardware for live playback while plugin in post. As far as I remember the sound field mic cable has 12 pins which breaks out into 4 xlr separate cables which depending on your needs can be fed straight into recorder or decoder for playback, I usually record 4 channels of b format but monitor through decoders headphone input. During post production I just decode using soundfield plugin from 4 channel b format into 8 channel cube ambisonics.
However for certain daws to do decoding into 8 channels can be tricky so for that purpose I use pyramix. For sourround decoding just set up plugin to decode from b format to 5.1. Once u got audio captured its so easy to configure playback from mono to 3D or any configuration you want, you can even zoom in sound from captured recording etc..
Basically you should get special sound field cable that supposed to come with the mic.
Hope this helps