It depends, to me, if Sega pulls out a mysterious Shining Force 4 or Phantasy Star 5, etc. Than definetly Sega. I know Sony will be showing Twisted Metal Black,so I am psyched about that!
But remember some journalists (who I think very low of) proclaimed Sony trhe winner last year, based purely on the MGS2 video. I thoguht that was pretty sad. I believe the same ones will do it again if Square shows an FFX or FFIX video. If Microsoft pulls out a game that looks even remotely better than Malice with all of its graphical glory. Or Nintendo if they show an actual build of he new Metroid or Mario game!
Either way, this E3 will be THE one to watch!
Eric Jacob