Are you commenting on the lack of echo and reverb on the stereo versions? Engineers at Capitol created the American Stereo versions by way of processing the mono tapes through electronic delays and possibly an echo chamber as well. At least they were kind enough to call the resulting sound Duophonic.
Fake stereo has fallen very much out of favor in the past 30 years or so. So the US CDs use either the true British or American stereo tapes.
Dyslexics see the world differently.