One of the things in Cakewalk is that some of the Prochannel Modules
are "on", especially if you are using a "preset" scheme from the startup menu,
which will affect the sound.
For a complete "Null" you have to insure that ALL Prochannel Modules are "off"
and THEN you have a "NULL" to compare with the others...
The following are NULL with no modules on
Normal - This only creates a Master Buss with no PC Modules on
Blank Project - just as it says - nothing..no Master and No Tracks
16 Tracks - 16 Tracks with NOTHING on.
The others will have PC Modules turned on and that will affect the sound.
The Template used in the other DAW's may also affect the "sound".
Same thing...some things may be "on" by default that you are not aware of...
Not that this was the problem, but just an FYI...