Thats not what I'm saying at all. Obviously that would just be stupid. Im saying that hypothetically, if you had a tall key forward and a midfielder of equal standing and performance output, you might still have to pay the key forward more simply because they are rarer to find and young tall forwards take longer to develop than young midfielders - which leads to more big money offers from rivals. The big money that was splashed around for guys like Tippett, Rance, Cloke, Carlisle and even Hendo himself from other clubs is proof of that. Big money relative to their performance output.
Boyd is a good example too, offered big money from the dogs and apparently ours was close to 1 million per year as well, despite only being in his second year and showing nothing at senior level yet. His perceived value was mainly because he was a key position forward who 'you could build your forward line around for the next 10 years'. No club would ever offer that to a 2nd year midfielder who has shown nothing (except GWS and Scully, but GWS were cashed up and desperate to attract some players).
Betts is a good player no doubt. But i think a lot of people agreed at the time that 600k was too much to pay for a guy who could only play small forward, and in my opinion, goes missing too often in high intensity, physical games.