It doesn't looked anymore shopped than any real screen shot lol. I mean what do you see? A badly compressed jpeg with no or wiped exif..
Set your screen to the longest possible timeout or to never turn off and then display something black since its AMOLED. Can get some epic screen on times while doing nothing. Extended batteries help as well. I could easily double the screen on time i get to 4-5 hours doing so. Not sure about 7 ive never tried.
Current Phone Nexus 5 | Black 311 | CyanogenMod 11 | T-Mobile
Old Phone Galaxy SII Epic 4G Touch | CyanogenMod 11 | FI25 Modem
Desktop i5 2500K @ 4.5Ghz | ASUS P8Z68-V PRO | 16GB Corsair Vengeance 1600 | Seasonic X750
MSI GTX570 TF III @ 950/1900/2300 | 2TB 5900 + 2X320GB 7200 RAID0 | Zalman CNPS9900 MAX