Is it harder to learn piano or guitar?

Which is harder. I think guitar is harder bec. You do one thing with your hand and whole other thing with the other. Do you get me? Like drums. When you beat on a drum with your left hand fast. And with your hand on the other drum slowly. That must be very hard and not easy. Plus the thing you press on with your legs. I guess drums is harder than both. I never tried any of them. Plz tell me i would like to know. As i have a piano but never play on it dunno why. I wanna play songs for coldplay or something but no notes and i cant understand notes. I can play the songs recorded on it its a casio but its stupid songs like kids songs like barney and macdonald had a farm ia ia o . But its a big piano not the small one lol.