When are you expected to see everything?

The round 8 game between Topalov and Aronian from the current Linares tournament is provoking some interesting discussions on the various chess forums around the world. In the diagrammed position Topalov played 34.Bb3 and the game was eventually drawn. Instead Topalov could have played 34.Rxe4 which leads to a winning position after 34. ... Qxe4 35.Qc3+ Kg8 36.Qc7!
Topalov's missed win has been described in a number of different ways. Commentators on ICC described it as a 'blunder', while young GM Anish Giri thought that a 2800 player should have found 34. Rxe4 in a couple of seconds.
On the other hand GM Mikhail Golubov in ChessToday was far more diplomatic. "Missing a really nice win" was his comment to White's 34th move.
Personally I prefer Golubov's take on the situation rather than the "OMG, he didn't see everything" crowd. In part because I feel the commentators are holding Topalov to a standard of perfection that none of us will ever achieve, and also because it is easier to find moves like 34.Rxe4 from a 'standing start' rather than as part of the thread of a 3 or 4 hour game.