The original V-1101 VC
-10 was the most powerful takeoff I've ever seen, because it was built for short takeoff performance! The VC
-10 was designed for hot and high airfields with bags of power. Thrust to weight is probably more than the 757.
I regularly see Continental 772ERs take off fully loaded, and they make short work of the takeoff roll. So that's one powerful bird.
Well the 757 wins any takeoff power race, but since it isn't a widebody, I'd say an empty 777-200LR
Except that it hasn't even been built yet, never mind flown!
If you meant the 773ER then I would think a full power takeoff would be explosive without fuel and payload.
The A300 is also a good short field performer as it was designed for just that sort of operation, without heavy fuel loads for intra-Europe operation.
Lead me not into temptation, I can find my own way there...