Dungeon xp increased 66% and Mark bills increased 33% is the numbers I'd seeing. They did that specifically because Bozja was too fast for leveling and had to make them compete rather than blanket nerf it.
Dungeons were 50%, I checked every dungeon besides 83 and 89 and was always 50%. They do provide substantial xp now though, around 40-45% of a level per run, so 4runs with some side shit is enough to do 2 levels, or 5runs and you'll have leftover(so next 2levels only 4 runs).
Bozja has 2 different systems for leveling from what I've seen, Zadnor being the slowest of the 2. It's still pretty fast and easy due to the FATEs spawning in a certain order, but it's not very fast. The fastest is Bozjan proper, but you need like Recall consumables from Zadnor and mount speed essence, and basically the idea is you go to every FATE on the map(any zone), tag a few things for credit, then TP out and run to another FATE. It's frenetic shit and looks really annoying, but apparently the xp is higher than even current dungeons if done properly(lvls every 30-40mins depending on the lvl range, since the xp doesn't scale).
Honestly I've been dungeons since the start, I fucking hate doing Zadnor. Even for 70-80 on SGE/RPR, I only did like half of it in Zadnor and the other half doing roulettes and shit, cause I just can't bother staying in Zadnor too long, and definitely don't want to do the shit in Bozjan.
But yeah now dungeons are very fast, much faster than previous expansions. One downside is you level faster than your trusts, which makes trusts leveling a pain in the ass(more than it was). I'm tempted to just wait until they nerf them in 6.5 or whatever.
And yes for side stuff, Fairy daillies are about 1-2mins depending on the set for a flat 1million, which is nice enough, and hunt marks are about 8-10mins for 3+millions, which is also very nice. The scaling on huntmarks is a bit weird too, so you get like 205k per quest at 80(so still 3m, which is half of your fucking level), but doesn't go too high so you only get like 3.3m at 88 or something, so "only" a 3rd of your level. Still for the time involved, it's a must do.