User blog comment:JAlbor/Community Thoughts on Ward Changes/@comment-5035765-20131116021429/@comment-1330314-20131117100838

Stonewall and Trick2G did a lot of comparisons on their respective YouTuve channels. Some junglers like Nautilus and Shyvana have slower clear times, but most junglers, and even previous non-junglers like Cassiopeia clear a lot faster, particularly Utility Udyr. Going full Utility will obviously not benefit you as much in terms of clear time as full Offense, but it helps a lot in terms of jungle sustain and ganking power, what with the movement speed-based masteries and new Culinary Master turning pots into mana-restoring biscuits.

I don't think Riot is trying to diminish ganking junglers in any way either, only that they want farming junglers to benefit too and not fall off as hard. Utility masteries benefit ganking junglers by a huge amount, and the new items allow farmers to make a lot of gold. The new Wriggle's is a bit crap, though.