Let's see.
The Taylors were all spot on and pretty much identical (low action) across the models I looked at.
The Gibsons were (yes they were) consistent in their bridge action. Consistently very high. Although, the nut action on my SWD was too low. Neck angle and humidity does not cause that, rather the slots being cut too deep caused the .001 clearance fretted and .020 unfretted (low E). But then again, as you said, it did not ship from Gibson that way, so I guess the Martin and Taylor gremlins sabotage my guitar.