I think it would be a tough and epic fight if he fought each individually. It would most definatley be high difficulty on both sides. While I believe madara should be able to defeat him, Im not to sure about hashirama, unless ofcourse he uses sage mode. But all in all it would take madara and hashirama high diff to defeat the 3rd raikage. As it would take the 3rd raikage high diff to defeat the others.
Edi: oh, wait you said current Madara. I thought you mean alive EMS.
Current Madara easily beats the 3rd Raikage.