its hard to give you an xp per hour rate because you have to go through the lower floors and those give crap xp rates but when you get to higher floors each floor will get you 30-60k xp and if you have a good team can be done in 1 hour other i average 1.5 hours per high level floor. i reccomend doing only the last 5 floors large and then the 10 before that on medium and all other jsut do small rush or super rush.