Thank you Catbus for your reply. I realized that it was a common trait among the different mixes to be louder or have more dynamic range between them as technology progressed. I enjoy the mixes just the way they are, I have no problem turning my TV up to hear the original stereo mixes, plus the fact that those tracks are quieter is an added bonus for me as I can put on the CC while my partner is sleeping and geek out in bliss.
Cheers,
Adam