Hurcules
Legend
All characters scale to 29 and all gear scales to ilevel 34 in a BG or arena. So no reason not to be 29 unless you stay 20 for vet f2p.
But stats wise. With the scaling. Is it proven that 29 has better stats than 20 when scaled? Because before WoD I know that a level 20 lock had better stats than the 24. A couple for int and alot more stam. So idk about now