"Overpowered" is a very relative term.
Remember that full size A/C have a whole bunch of limits that do not apply to R/C models.
R/C models are usually built to withstand abuse that would turn a full size A/C into a ball of junk.
R/C models often have an engine that is sized to provide power for things that are impossible for the usual full size A/C.
Take off is one of the most dangerous flight modes for both. The shorter the run, and the faster altitude can be gained, the better.
(I still remember limping around the pattern in a Piper Comanche when one of the mags failed at about 500AGL after takeoff, with four souls on board.)
(Myself, the local FAA examiner, and a couple he had brought along.)

Naturally, there are scale enthusiasts out there that want to emulate full scale takeoffs as much as possible.
Each to his/her own, I say!