Looks to me like that Suburban was on 38s.

A suburban runs a wheelbase over 130 inches long. Most obstacles are all about making it difficult for a shorter wheelbase vehicle. As for feeling bad about a suburban making it, don't burbans can go places, they have a whole lot of weight and not bad flex the only downfall is they have so much overhang, but on a set of 38s with appropriate lift, I have a hard time seeing anything on that hill even getting close to the undercarriage of that burban.

Looking at what I can of that hill, I can't say definitively, but it seems to me that its just a matter of choosing the right lines and using the skinney pedal appropriately.

To make it an easy trip up that hill you need really good articulation, or some lockers.

Airing down will help, but being careful and knowing the right place to get on the skinney pedal should get you up just fine.

Some folks are religious about airing down, I am not one of those folks. Don't get me wrong, it helps, sometimes it even helps alot. But in general airing down is usually not enough. Give yourself some time, and try some lines that may not really seem to make any sense. You might be surprized what happens. Also be prepared to "bump" yourself over the obstacles. (which can also mean, be prepared to get a little body damage =) ).