AB: there are many significant benefits over Elite from my perspective:
-- upgrade confirmed at time of reservation, no need to wonder if you made the cut and spent a $100 or more for a V fare that turns out to be non-upgradeable. Not a benefit if you fly paid J.
-- systemwide upgrades. I "regularly" fly on $900-$1100 V fares to CDG/LHR and LOVE the upgrades. (not a benefit if you only fly in N. America but a Super Deal to Oz, Europe and Asia).
-- 1 system-wide gets you from point A to B in N. America. Elite require 2 certificates to get from A to B if long haul (e.g. YYZ-YVR) (not a benefit if you fly paid J)
-- access to MLL lounge even when not travelling AC (has been quite useful for me)
-- access to J seats if not oversold for reward travel, Elite only get Y guaranteed now?
-- no blackout dates
It may not seem like much but when you start adding them up . . .
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BlondeBomber's Star Alliance Gold Comparison Chart 2001:
http://members.home.net/deercroft/starall00.html
Dorian's Star Alliance RTW Price Chart:
http://www.informationlab.com/rtw.htm
flyers'places - restaurant, bar & hotel recommendations:
http://www.flyersplaces.com