Why G.U.Y. had no success? Its peak on Hot 100 was 76(!), I don't even know even If it entered the top50 on iTunes, it did preeety bad on the radio and the highly budget music video didn't help it, not even the promo Gaga gave it with tv-radio interviews and twitter trends. G.U.Y. is my favourite song off Artpop and as Gaga said, it's a radio friendly album which includes a lot of hits and I'm sure that GUY was one of them according to what Gaga said...why it hadn't any success worldwide or in US? Discuss, explain and keep it calm.
ARTPOP is a really messy era not many is here for ARTPOP, she should start fresh and ditch the Artpop themes. G.U.Y is a great song with a great video though, it also lacks televised live performances (besides one, which wasn't really an excellent promo) , so that could be it.