A #3 philips screwdriver would not have stripped it like that. The pic shows you clearly used something else. Arguing is pointless. Drill it out and put in a new screw. Problem solved.
15 LibTech TRS HP . 15 NS Snowtrooper . 15 NS Ripsaw . 13 Salomon Pow Snake
15 Now Drive . 14 Now Drive
14 Flow Hylite