I would be very interested to hear if anyone can interpret the spectrum analysis. It's an area of learning I've not entered yet. To be honest - my intention was to have the bass and kick drive this track. I used sound FX to give the track some spacial awareness.
I have to say, I'm not entirely happy with the LANDR mastering - it emphasizes the top n bottom, but not much in between IMO. But generally, I'm just happy to have a half decent master, as I've never been able to master my songs. One thing that LANDR has been useful for is to use as a reference - it really does show you what is wrong with the mix so that you can go back n fix it. Believe it or not - the bass in this track was actually about 5 or 6 db LOUDER than it is in the final mix.