Well I play drums and have several friends that play guitar.. I would say that drums are one of the hardest instruments to be "GOOD" at.
Simply because it is so physical and coordination - technique based. Yes, you can learn some basic stuff, which is pretty easy, and can get you through, BUT that is not being GOOD at the instrument. Once you realize how technical and what is actually involved with different styles of playing, u would be shocked.... There is honestly not enough hours in the day to get good at this, I donno how many hours I have spend just bouncing a stick; other drummers will know what I mean.. But never get drums mixed up as a easy instrument, there is more too it then meets the eye
Cheers..