This E3 both Sony and Microsoft had a lot of multiplat games roughly around the same number they had exclusives
Microsoft: Assassin's Creed Unity, The Division, Call Of Duty Advance Warfare, Witcher 3, Rise Of Tomb Raider.
Sony: MGSV Phantom Pain, Arkham Knight, GTA 5, Far Cry 4, Destiny.
(note i may have forgotten some please remind me what i forgot down below)
The Pro of this is that they do give the third parties some spotlight
The Cons are that seeing Sony or Microsoft putting third party games over their's shows that they may not have that many exclusives in development and how it makes wish they like a on stage demo for Halo 5 or Uncharted over like Arkham Knight or Call Of Duty. While only EA and Ubisoft have their own conferences they can just show their games there and not at any of the first party conferences.