It's smaller, a little thicker and I know it is lighter but it feels more sturdy. I'm not sure which is actually stronger. Comparing the Pixel XL to iPhone 7 Plus, I think it is more dense from a math perspective, because Pixel XL is 92.5 cm[SUP]3[/SUP] (15.47 x 7.57 x .79[SUP]+[/SUP]) and 168g while the iPhone 7 Plus is 89.96 cm[SUP]3[/SUP] (15.82 x 7.79 x .73) and is 188g, so the Pixel Xl is approximately .55g/cm[SUP]3[/SUP] while the iPhone 7 is .48g/cm[SUP]3[/SUP]
[SUP]+[/SUP]The Pixel XL has a minimum thickness of .73 cm and a maximum of .85 cm, so I used the average thickness of .79 cm.