It would make zero sense if this is a different "Fisk" since he was always a part of the MCU. They would have to be the original characters and he would have had to of gotten out of jail again and found his way back to power despite people knowing he is a criminal.
Making him the kingpin but not the same kingpin would be a complete wtf. It's the same universe.
Making him the kingpin but not the same kingpin would be a complete wtf. It's the same universe.
Formerly tv1113