I was feeling what you are feeling, but I can tell you the bass is very, very much there if you are specifically listening for it (at least on my setup)- it's just fighting something else for frequency space. If he just turns it up something else weird will happen - it has so much energy it will start hitting the limiter and doing things to the mix and you still won't be able to hear it.
The drums are huge, and maybe the kick is too huge - maybe try and notch/cut out some eq space in the kick for the bass, boost the bass in same spot boost the bass upper mids end to get it a little more present.
The guitar riffs and tone are money. I would kill for a sound/tone like that.