The texture of both papers is similar, they're both baryta papers, but I suspect "similar" in this case does not mean "the same", and that's what must be accounting for the slight difference in sharpness.
Jac, I get your point about the profiles, but I don't have a problem on my computer running different profiles for each paper; before printing, I also check other parameters to make sure they're set identically.
Oren, I'm running El Capitan on a MBP, no issues at all with the OS, Photoshop or the Epson software.
Thanks, all.
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