i hear alot about enginge potential. But in the real world and the with the money the ave person has dose it realy matter if you motor has a 2000 hp potential ?

if so tell me why because i think the ave person only gets a 10-20 hp gain on there motors anyway if they don't swap or turbo it i may be realy wrong but just wondering . this is because i have been told that this engine or that engine is junk and never realy get an answer why!