Oh Boy! Gomez, Higuain, Llorente, Klose, Palacio, Milito..... Should I continue?
Gomez - no. Bayern was really close to signing Dzeko in the summer 2012. Heynckes really wanted him (because he would have been an improvement over Gomez) and when it failed, they got Mandzukic. also, Dzeko outscored Gomez in his 3.5 years in the Bundesliga every season besides his 1st when he just came into the league.
Higuain - this is a really close one but i would still go with Dzeko. Higuain may work better for the team, but as a pure goalscorer Dzeko is better.
Llorente - i already explained earlier in this thread why Dzeko would be an improvement
Klose - too old and injury prone. career wise Klose is obviously better, but currently he cant compete with Dzeko
Palacio - i will jsut pretend i didnt see him in this list
Milito - same as close, althought his career is not so impresive as Klose