Thats the question is it the recording or the speakers?
Queen are not that well recorded live (like most bands...it is a rare gem when a live recording sounds just like the real thing). So I would say it is the recording.
Queen's studio stuff is ok. Also not the best I have heard. Not close to really well recorded bands like INXS, Tom Petty, Pink Floyd ,Simple Minds, Dire Straits, The Police, Keb Mo....etc. (There are more but the seriously and consistently well recorded bands are fairly obvious)
Some bands like a dose of deliberate distortion...like the Rolling Stones.
I still enjoy all the music but distorton sounds more grating on a better system than over a car stereo.
You have some pretty big awesome powerful speakers....perhaps you can post some PICS of the setup and we can all dream and play air guitar!!!!