What makes it clear to me that it is a coup is that the provisional government plans to implement policies and pass legislation that would never have a chance in an election.
Which policies? Everyone has issues which are dearer to them.
Mostly, I find Dilma's policies insufficient. Especially social ones (there are only 14 countries more unequal than Brazil, out of 176). But I don't find them 'destructive'.
Destroying Petrobras? Destroying the electric sector? Destroying the value of our currency? Destroying growth and at the same time keeping high inflation?
You didn't answer the question though. Would it not be a coup if the new president defended policies which you consider "sufficient"?
This line of reasoning makes no sense.