Arguing about something like that is incredibly stupid johnny, They all use the same parts, same design, operate the same way. You're arguing over 1 letter. AK47 is easier to say than AKM, it is still in the kalashnikov family and is basically identical. By your theory 1000cc bikes do not exist, only 999cc bikes, so you should correct anyone calling their motorcycle a liter bike, or correct everyone with a b16 calling their engine a 1.6l since its only 159x CC. You're nit picking an arguement for the sake of some need you have to be perfectly correct, when infact, it does not matter at all.