do i have to repeat "no bias"? the contrast and the display is sharp, definitely better than the typical android ui.
Of course there will be bias when Android is objectively better than iPhone.
Why is Android objectively better than iOS?
Cheaper price points for low end phones
Similarly priced Android phones outperform iPhones
Extended batteries (not just cases, actual batteries)
More user hardware freedom (SD cards, repairs, batteries, mini HDMI, etc)
More user software freedom (immediate USB storage without iTunes malware, rooting, custom ROMs like CyanogenMod)
Better with actual computing. Apple made iOS to accompany their other (also expensive) Macs. Apple intentionally removes functionality that could lose them a sale of a $2000 Mac. Google doesn't care what it kills and replaces. They just keep making it more powerful with each and every release. It's even a viable OS for netbooks and low-end laptops now.