With a massive record-breaking era from Katy, can she be considered bigger than Taylor?
Taylor is smashing right now while Katy is on break so consider their past achievements and impacts made in the industry.
They're about equal, honestly; each has something the other doesn't. Katy is vastly superior with singles, while the opposite is true for tours. They're both about equal in albums, with Taylor being stronger in the US and Katy being slightly ahead worldwide (with their most recent releases).