Merry Christmas!

PAs are generally quite a hot topic across all games, some people love them, others hate them. What I can confirm that is that PA strikes against the basic stats of the Units, no bonuses applied, but it too cannot benefit from any offensive bonuses the attacking player applies. It can be good for the PvP tournament if you manage to spy a City with a lot of valuable troops out from the Acropolis. If you manage to catch someone's Offense out in the open, even better. Of course, that is quite situational and I personally would advise using Assassins with care and consideration! They are quite a valuable resource after all, and by no means a cheap one.

I am in the "hate them" camp :P