You're right. It is semantics, but most players who go to anchor tongue from another manner end up creating too much tension by pushing the tongue against the lower teeth causing a slower, tighter tonguing motion. TCE position is slightly different than your descriptions of anchor tonguing. It actually is on top of the lower teeth with blade of the tongue striking the back of the upper teeth, releasing the air, rather than the tip striking the aperture, which alters the sound. Of course there are subtle variations in this action depending upon register and dynamic. Below the staff the aperture does get a fair amount of contact. People get into trouble when their attention is focused on the body rather than the sound and the music they are playing.