Ryse is actually extremely impressive looking in person. It's quite detailed and features all of the typical Cryengine features in full effect.Killer instinct doesnt look that impressive, just has alot of particles And aside from bullshots neither does ryse.
Killer Instinct isn't particularly impressive, but it's reasonably attractive and runs well. That said, one of the stages I played used a completely flat bitmap background with a few 3D trees scattered about.