I've got the Survivalist and both versions of the Bowie (the small and the 9.5 inch one). The Survivalist is a terrible chopper and the 9.5" Bowie is good for one reason: uneven weight distribution due to the handle.
The Survivalist has an extremely heavy handle and a relatively thin blade, which makes it hard to concentrate force into the blade when chopping. It's just not easy to get enough power into the blade when most of the mass of the knife is in the handle. On the flip side, it's a good slicer which would be hard to beat if the handle was lightened even a little.
The 9.5" Bowie is the opposite: longer, slightly thicker blade and a comparatively thinner handle. This puts most of the mass into the blade and helps put more force into the chop. The curved handle also helps by adding a little extra leverage into the chop. As with most Bowie knives, it's not the best chopper but is perfectly capable while also giving you a nice point to use for poking stuff. I used mine to chop my old Christmas tree in half (about 8" diameter) and it made quick work.