To be honest, I like neither of them. I've only listened to maybe five songs of JB and only three songs of 1D, which is not a reasonable basis for an opinion. However, thanks to the radio I've listened to those songs more than my brain is capable to resist, so when one of their songs come on the radio, I'm forced to switch the station.
The only "good" thing I can say about 1D is that their singles are pretty catchy, so I understand why certain people like them. Whoever is writing those songs is doing a really good job to make them popular.
Sorry, but I'm almost positive 1D would win there. At least 1d uses instruments.
I would vote for Glee right away.