Determining the bit rate on a real-time USRP implementation
Yes, bit rate is simply the amount of bits transported, so it's the number of symbols per second times the number of bits per symbol, as you noted. No surprises.

Note that any real-world system has a high chance to have channel coding, which means the info bitrate is a different one than the code bit rate.

Edit: ah with your picture it's clear. There's no channel decoder, so no channel codes involved.