Recently the the VMML at the University of Zürich performed a benchmark comparing Chromium and Equalizer on a display wall. The result surprised me, as I would have expected less difference between the two solutions in this setup, since only static display lists are used. Unfortunately neither InfiniBand nor the broadcast SPU were available for this test, which should improve the Chromium performance.
The performance graph is on the left. You can download the White Paper from the Equalizer website.