Digital BW, The Print

Any one here using the R800/1800 3MK set-up AND the 1400 BO set-up also?

I printed a solid black rectangle with each set-up. I was surprised to 
see that the 3MK rectangle with QUITE a bit denser than the 1400 BO 
rectangle.

Unfortunately, I don't have any measuring tools to taking any readings.

Can anyone here try this test and see if you see what I'm seeing?

Thanks,
Scott