What am I doing/reading incorrectly?
I can see that you have only submitted 20 shares and you expected an accurate hash rate from multipool.
The only way multipool can show your hash rate is by number of submitted shares in a given period of time, with such a small hash rate, multipool could be as much as 50% off your actual hashrate. Give it time and you will see your hash rate fluctuate around your actual #.
Edit: Take a look at your Hardware Errors - 70 seems a lot - check you configuration
Edit2: why do you have so many threads? 1 thread per GPU is good enough