Yes both games are into a similar time span of the host's console life cycle and both are high budget exclusives. Bungee hyped their lighting system, like Killzone 2's lighting is the most advanced on the PS3 so far (said to be at the expensive of other sacrifices in Halo 3). From that standpoint it's a pretty fair comparison.
But IMO the differences are bigger than those screenshots show. Killzone 2 is in a higher resolution (the pictures are scaled down) and seen in motion Killzone 2 benefits a lot (awesome animation quality, destructibility and good acting performances). Online gameplay in Killzone 2 is also a lot stronger and technically impressive.







