Aye, graphics certainly do help, but it's a little more complicated than that. Considering 60% means it automatically matters over story, audio, and gameplay combined puts up some flags from me. I'm a HUGE sucker for cel-shaded graphics in games like Wind Waker, Okami, No More Heroes, Klonoa, Sly Cooper, etc. Personal preference, but even the best looking cel-shaded game doesn't have near the muscle some games have...and most of those games were past generation. I may have a limit to what level of "ugly" I can tolerate in older games, but considering that I can still enjoy myself despite how Final Fantasy 7's in-game models looked like shit even back then, I would consider myself pretty flexible. Amnesia is immersive as hell, but it doesn't look that great. It's also the audio and general design that gets to you.
Though I still hold that my favourite best-looking games this gen are Ratchet and Clank Future: A Crack In Time, Journey, Sonic Generations, Bastion (...meh, I'll count it), Limbo (meh, counting it too), Bioshock/Infinite, Super Mario Galaxy, and Rayman Origins.