I find just the opposite to be true. Never once during my meals at Per Se have I had to think about anything other than the food or my dining companion. They literally take care of everything else. Unless superior food is distracting to you, I just can't see how EMP is the better choice, especially since my meals at Per Se have been uniformly longer than those at EMP so I have had more time with my friends.
Personally I find that when at Per Se, the food is so outstanding, and the presentation so extraordinary, I pay a tremendous amount of attention to what is on my plate. There are times I actually want it this way.
I was recently at La Pergola in Rome, and the experience was similar to that at PS, where the focus was very much on the food and its presentation. I was there with friends from Atlanta & Honolulu and very much enjoyed their company, still the focus was very much on the food.
I should add that I'm not suggesting that the focus can't be on food at EMP, it very much can be. But it's easier to see food as "background" to a special gathering while at EMP. That is almost impossible at PS.