Well, in my opinion, I do think that microsoft had a stronger showing at e3 this year. More of their exclusives appealed to me versus sony. Still, the games I am most excited about are going to be multiplatform and since I dont own an x1 (and the better version will be on ps4 anyway). I will be buying them on the ps4.
Overall though, I think nintendo had the strongest showing. For me, it was nintendo>microsoft>sony...