EDL whats the real story

[JREED@chamb.disa.mil]

When I read the Audi brouchure describing EDL I thought great here is a
vehicle with locking front and rear differentials.  Similar to the Toyota
Landcrusier except the locking would be automatic not manual. I have
since learned that EDL is a misleading name for traction control, no
locking involved.  Is Audi trying to make us think the diffs are really
locking. My real question, Is EDL front and back better than the old locking
center and rear for going through deep snow?  All the theory is great but
has anyone really put it to the test?  Is EDL just cheaper or is it better
than locking? Seems like manual locking front and rear would be best
when used properly.