I'm a Gwen fan, too. And whether you like Britney or just use her as an opportunity to make reductive jokes, she and Beyonce were known as great live performers from early on in their careers. They've always had memorable performances and put on big shows. I was making a general statement and used those two as an example - there are certain pop stars know for great stage shows and others known for vocals. Gwen isn't known as either an exciting stage performer or a great vocalist. There's no big draw to see her live.