Think of it this way.. The video I linked the other day was pulling 100+ amps at full throttle... so 25-30 Amps-ish per motor. I was NOT running full throttle for the whole flight and still sucked the majority of the battery down in about a minute. it is a 5" quad. I'll have to look at the motors and props on it. It was running on 6s so 2000+watts easily at full throttle. Amps x Volts = Watts.
Do you crave short flights, or would you rather have something that handles really well under most conditions?