Difference in Evolo optics

This is the two different optic designs the Evolo lantern can come with. On the left is the optic seen in the Sapphire and ZX1. On the right is the optic seen in the ZX3. Each lantern has a 45W cosmo lamp, and the adjustable lampholders are set so the arc tube is in the same physical position. I do wonder how the different optics compare for performance, and what the difference in distribution would be like.