It's the first question that's asked the very moment the curtains fall of the last of the platform holder E3 conferences – who won? It's a nonsense. Anyone of sane mind knows it's a nonsense.
But it's not a completely worthless question. By asking ‘who won' what you're effectively asking is ‘who impressed the most'.
And considering that E3 is all about setting out your stall for the year ahead – exciting retail partners, convincing analysts, getting journalists to believe in you – to ask who put on the most impressive show is a valid enquiry.