Also, the Romulans in Star Trek XI were much different from Romulans that we've seen before. They were miners, not soldiers or politicians, and the tattoos were explained in the Countdown comic book. Who cares if the Klingons has piercings, they're a warrior culture. Plenty of warrior cultures have piercings, its not that hard to believe.
Feel free to justify it to yourself anyway you want.
I don't care for either.
I like the Klingons minus the piercings.
As far as the Romulans, did the countdown comics before the movie came our depict Nero with tats?