Halo 5 video has "fake" views, look at the ratio of likes/dislikes, it's not normal. That video have views from ads while the rest are just from regular views. The Gears of War 4 video has more likes/dislikes. While all of Sony's videos are natural views, it shows how Sony really dominated E3.
Yeah, some of them probably are ads.
Someone showed the Star Wars video with 7 million views, I was informed that was also advertised.
Not really, Star Wars has more than 110k likes, with almost 8 million views.
Take a look at PS4s Spring Sizzle video which has 7 million with only 3k likes. All videos except the Halo 5 video are natural views.