Towing loads-- H2 vs H3

So I spent the last week bouncing around the 4 corners region/Royal Gorge area of Colorado and towing a 3200 or so pound camper behind my H3. Flat areas were ok- 60-70mph fairly easily.

But crap if the mountain passes werent painfull! 20mph max on Wolf Creek Pass and other fairly lame grades.
I nearly convinced myself to trade my H3 in for a H2 even though it probably won't fit in my garage, blah blah blah....

My question is this- how many tow a camper with their H2 and how does it perform in the mountains? My little RV is only a pop-up camper, dry weight of 2800 #'s with a 800 #' cargo capacity. I try and travel light, but it doesnt always work out that way.....

I'm giving serious thought into trading my '06 H3 with 20k on it for a used H2 with a few more miles.... Will I be sorry??