In terms of the general graphical feel, my limited experience with PGR4 has led me to believe that overall it is more impressive that GT5

. GT5

puts a lot of focus into certain aspects of its graphics, the cars and the replays being the two main points, whereas PGR4 is consistent across the board with good tracks, cars and surroundings. The tracks in GT5

are just bland in comparison, but they do the job and if you take into account GT5

s rather high resolution (nearing on full 1080p) and high framerate (it aims for 60 doesnt it? with slight dips) this is unsurprising.
In terms of handling, Forza 2 is GT5

s competitor, i personally prefer the handling in GT5

as the braking in forza is a bit strange, but that could just be because i'm used to GT5. Forza looks rather bland, however it manages a solid 60fps which is worthy of merit for a racing game.