In comparison to the other screens? yeah it is. It's just a little bit under four fingers stacked together and, that and I double checked the dimensions in pixels, 480x272, with an 16:9 aspect ratio it keeps coming out to this size.
I wish they;d just give a REAL size discription of the screen rather than this 4.5inch diagonal measurment. because when I try to use that to get the size in illustrator it doesn;t match up the screen was ridiculously larger than that when I tried it at E3