Don't forget the fork length. I know little about suspension forks, but the same priciples apply. If the fork is longer or shorter, it will alter the head tube angle and further change the trail.
Apparently it's common for a 29er to have a lot of trail compared to a road bike. Those trail numbers are really large compared to values in the 54-68mm range found on road bikes.
http://www.fisherbikes.com/bike/model/paragon