It seems to be impossible for me to find a tester for Egoiste in a store for some reason. - so I can't help with the comparison.
However, I'd say that although I view PE as a "sexy" fragrance, it's one of few that I would wear to the office. Please use extreme moderation...one or two sprays only. If you go for more than that, you will be "that guy".
now to the bar...3 or 4 shots of PE.
I'd love to try the Egoiste to make my own comparison as well! Sorry I can't be of more help!