The Nokia Lumia 720 comes with a 4.29 inch IPS, ClearBlack display. It has a resolution of 800 x 480 pixel resolution. The touchscreen of Lumia 720 is made up of something called Sculpted Glass.
The HTC 8S has a smaller 4 inch touchscreen. Its Super LCD 2 display comes with 800 x 480 pixel resolution. HTC has used Gorilla Glass on the 8S.
The HTC 8S comes with only a rear camera of 5 megapixel. There is no front camera in this handset. On the other hand, the Lumia 720 has a 6.7 megapixel rear camera and a 1.3 megapixel front camera. Also, the Nokia handset uses a Carl Zeiss Tessar Lens, which is renowned for capturing quality images with good contrast and details.