Have you compared gunfights and chase scenes in other franchises to this one? In COD, Killzone etc, these segments really are linear and often far more constricted. Here it's a little more dynamic and exciting.
Regarding gunplay, things are frenetic and there's lots of player maneuverability permitted, there's also a tonne of destructability in cover and environmental objects, a range of different types of cover, and overall very satisfying and well blended animations, be they melee combat, or the way Drake interacts with the environment, cover or weapons. Then there's the hit detection, controls and weapon feedback itself.
Moving on to the chase scene, the multiple paths and route diversions, the visuals, the amount of destructability, the satisfying physics of the vehicle and it's exaggerated handling, the constant changes in elevation, surfaces, scenery, the tension introduced with the ever present threat from the armored vehicle, the pacing, the overall scale, the way it seamlessly integrates in to the next gameplay segment (him grappling on to the moving crane, from his already moving jeep) etc, it all just feels that little bit more nuanced, polished and well executed than typical of such segments in other games, and this was a shortened version of the chase sequence. The full thing is longer and even more dynamic.
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