No, that is over-simplistic. The aim of balancing is to ensure that each radiator gets the amount of flow it requires to perform effectively and efficiently in accordance with the design of the boiler. It is more than just getting 'hot' radiators.I agree that the system may not be balanced. but isnt the name of the game to hot radiators?
So, with a boiler designed to operate with a 11C differential between flow and return a well-balanced system will have this temperature drop across each and every radiator.
Large radiators will require more flow to achieve this, smaller ones less, hence why balancing through flow throttling varies between radiators and is similarly affected by pipe resistanc. This is why radiators further away will usually be required to present less resistance (through their LSVs) to make up for the additional resistance in the longer pipe runs.
Mathew