I have no idea what you're talking about. I went from level 48 Gladiator to level 49 Gladiator solo using leve's, and it took me about 2~3 hours (which was about 16 leve quests total, 4 in each level 40 zone, twice), on top of that, I'm already about 20k into the 100k required to hit level 50.

I honestly got better experience from this then I did in a raptor PL group, because I got about 6.7k exp per quest, and this was solo.