uhoh should be able to beat a 1200 player in those time odd... so I wonder if he really said this or it's taken out of context or something.
Unless his ability exponentially declines as time is increased on the clock (some blitz players are like this, but I assume uhoh would still be able to win...)
Anyway, time odds is only effective up to a point. What I mean is the gap it can close is limited. Even maximum practical time odds, say 60 seconds for the odds giver and untimed for the weaker guy can't make up for a 600 point rating difference for example. A 1200 vs a GM isn't even worth mentioning.
According to uhohspaghettio
"A 1200 rated player could beat Topolov (sic) if he had 6 hours to think of each move vs Topolov's 3 minutes."
"The ONLY THING the GM has in that situation is general knowledge such as that a3 isn't a great position for a knight"
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Got that, people? The only thing that differentiates a GM from a weak player is a knowledge of "general principles", and the ability to "calculate quicker".
From this post: http://www.chess.com/forum/view/general/uscf-ratings?page=2