I voted that the leveling in FFXIV is too slow.
Here is why not everyone knows a bunch of people playing and can get exp groups, so the only choice for leveling is doing leves which is painfully dull and slow. Very few people use the search feature forming parties that way doesn't work out too well.
I realize that in a party people can get faster exp then solo but the game is set up in such a way that finding a party is rather difficult. I had exactly 2 exp parties when leveling my gladiator up to 50 it took exactly 1 year and 4 months to get level 50 on Gladiator, now that is not what I called fast.