Eric S. Raymond wrote some comments about this scenario on his webpage.
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Elephants on both sides lead to entertaining chaos. Much of this scenario depends on just how much havoc each side can wreak with the things.
I gave my opponent, who was just learning the game, Antigus and the command-card advantage. He promptly ran an elephant into my center, demolished one unit of heavies, and did half damage to a second. He followed this up by running Peithon's cavalry down to my camp hex for the extra banner. It was looking pretty dicey for a while; he was up 4 banners to 0 at one point with two of my elephants gone. The Silver Shields and my medium infantry retrieved the situation by punching through his center.
This one is well balanced, with similar tactical challenges for both sides and Antigonus's command-card advantage compensating nicely for Eumenes's slightly higher weight of metal.