Yes, completely fake. The correct form--disregard sub-versions but note punctuation and capitalization--is
AppleWebKit/537.51.1 (KHTML, like Gecko)
(I did a multi-file search in recent logs and the first hit was beyond-the-shadow-of-a-doubt human ... because it was me on the iPad. That's iOS7.)
"Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot-Mobile/2.1; +http://www.google.com/bot.html)"
Punctuation and capitalization are everything. I recently added a global UA block on :: drumroll :: GoogleBot like that.