How doesnt it seem? Its the same exact sharpness, but much improved colors and the screen is closer to the glass. If it doesnt seem better, you must have interlacing lines on your screen which defitnetly degrades the quality of the screen and the sharpness
It should look better, even, since they've improved the manufacturing process so the pixels are even closer to the surface than they were on the 4. There should be less glare and glass between you and the pixels.