I've leveled a blood DK, prot Warrior, and Brewmaster through dungeons having no problems holding threat for the most part.
I've started leveling a prot pally (currently level 50) and noticed I'm having much more difficult time holding threat. I use Consecration w/ Glyph > avengers shield > Holy Wrath > and spam HoR. I also have RFury up at all times and switch seal Right & command depending on whether it's a single-target or multiple-target. Any tips would be great