The problem being that Marcone is not only smarter then Dresden, more powerful then Dresden, more skilled then Dresden, and has more money and support then Dresden. Marcone knows Dresden- knows his allies, knows how he operates.
Harry will have a lot of growing to do if he wants to beat Denarian!Marcone.
And frankly I doubt if he'll even have replaced his melted shield bracelet by the next crisis. The man is chronically allergic to using his brain or planning ahead.