I think The New Paper did a nice report comparison between Augeiro and Carroll, both with the same amount of $32 million, but different results, LOL
What TNP has failed to take into consideration is this:
Carroll is paid 70k GBP per week - 3.64m GBP per year.
Aguero is paid 240k GBP per week - 12.96m GBP per year.
Aguero cost close to 10m GBP more per year for Man City to sustain compared to Carroll to Liverpool.
Do they really cost the same?