Roar obviously. There's nothing sounds like Applause atm and the lyrics and vocals are very bizarre for pop radio.
All of this.
You are straight up delusional, and have lost all credibility if you think Applause is more generic. it's not even shade, objectively Roar is the sound that is more popular on radio. It's Mall Pop-Rock. The lyrics are relatable and cliche, "eye of the tiger, floating like a butterfly".