You are bringing a non football factor into the equation. A factor that differs from club to club, Tippet hasn't done half of what Dawes has.
You are confused.
You are also assuming Melbourne are capable of paying correct value for players...
Tippett hasn't done half of what Dawes has done? What a ridiculous statement. Lets have a look at some career stats.
Age: Tippett: 25 yrs, 5 mths / Dawes 24 yrs 5 mths
Goals per game: Tippett: 1.8 / Dawes 1.2, over the last 3 years Tippett has 1.9 per game, Dawes has 1.2. Tippett kicked 1.9 per game in 2012 to Dawes 0.7.
Hitouts per game: Tippett 7.9 / Dawes 1.7
Contested Marks per game: Tippett top 3 in the league even in 2012 when he was missing games and parts of other games with concussions / Dawes - never been ranked in the top 20 in this stat in his career.
You're right, Tippett hasn't done half of what Dawes has. He's done double.
EDIT: i focused purely on these 3 stats because these are the 3 key indicators of any key forward / backup ruckman, which is exactly what both of these players are. You could make an argument that stats such as Marks Inside 50 etc could be included (Tippett has a huge advantage there too but I felt these 3 stats were enough to prove my point). If you want to rebut with Dawes' slight advantage in overall disposals or handballs feel free to.
Also do a quick poll of afl fans from all 18 clubs and see how many rate Dawes higher than Tippett as a player. If its any more than 10% I'll delete my account.