The Maker Vs. Alexander Luthor Jr.

Both have 72 hrs. Of prep
Luthor's base of Operations:New Genesis
Makers base of Operations: Planet Bast
No Bfr
Final battle location: Earth2/Old Asgard merged landscape

maker ftw, alexander luthor jr got killed by joker

^^^
Alex didn't have prep with the Joker, so that's not a valid example.