Well as jobs stand now you dont really learn your job until lvl 35ish anyway so by the time you hit around lvl 40 and start to pt you can pick up ur job fairly fast if you pay attn to your abilities.

In xi you start learning your job much earlier in the game and there is also the factor of skill gain (which i am so thankful to NOT have in xiv, some skills like smn magic and strings are painful to cap) so the pl in xi has hurt it much more than the pl in xiv. Lvl sync has its good and its bad points but did make it much easier to lvl the harder to find pts with jobs (eg thf pup cor)

I think there are 2 very good arguements on both sides of this topic. I have all jobs at 50 and only couple were pl'd (on top of that they werent even pl'd the whole way just random lvls here and there) the rest were done the hard way and frankly either or was good for me.

The one thind I did like about level sync in xi was the ability to take my brd in and pull MMM for ls mates to help the lvl up their jobs.