Bad Romance is so overrated.
It was a massive song, but got overshadowed by Tik Tok. Umbrella on the other hand was unstoppable, and dominated the charts. You couldn't escape it even if you wanted to. And the iconic "Ella Ella Ella, Eh Eh Eh" has influenced so many dance-pop songs being released still to this year.
To the monsters: Bad Romance
To everyone else and the GP: Umbrella