I know that my iMac and iPad do not do the same things all of the time, I don't do the same things on both of them. I use them according to their strengths, e.g. - I render video on the iMac and I carry the iPad in my messenger bag.
Some places in the world have ****** internet where the 5GB sync on cloud (or more) will take upwards of 12 hours making your internet unusable during the process.