As the machines improve over time, won't the human element become less and less significant? A proper game of chess would be between two machines and any human interference would drag the game back into the woodpusher zone that us grandmasters are so familiar with. In all seriousness, when the machines are that good, no human has anything to add and very few could claim to understand a megachessgame.
I don't embrace the machine age!
http://en.wikipedia.org/wiki/Advanced_chess
It may as well be, as all top players now make use of engines and huge databases to aid their play. This is just one step further down that path.
It combines the best the computer can offer with the best the human player can offer. Assuming both human players are using identical hardware and software, the player who makes the best strategic plans/decisions based on the engine's concrete brute-force analysis will win.