You have to get both! That solves all the issues.
We do have both, have wheeled the hell out of both, and love both... almost equally.
Sice we have two labs that go with us everywhere, it's tougher to do in the H3 if you are camping. All the gear, tools, coolers and two dogs, two people is a little snug in the cab... even with the GOBI rack up top. So we normally end up taking the H2 when we do that.
If we are just going up to the mountains for the day, we take the H3.
It fits a little betterr on the Jeep the trails.
More capable? We've pushed the H2 harder and it has handled everything so far.
THe H3 has been great as well but does not have the AP/DP angles like our H2 has. So the bumpers have seen some rocks/ ledges.
If I had to choose between the two. FOR ME, the H2 works better due to the extra room.
On the other had, the H3 was also half the cost of the H2 and will run every trail the H2 will, but seems to take a little more finess and/or different lines.
...my 2 cents.