Did you notice someting above? All the lines in the song are equally applicable to Don, You and Me, except the bold ones.
People know not where Don comes from, nor who he is. Ditto You and Me!
Don isn't exactly what he appears to be. Ditto You and Me!
No one has understood the free spirited opportunistic and insane Don. Ditto You and Me!
Don feels he would do anything for a friend. Ditto You and Me!
Its the lines in bold that are the key differentiator between Don and the rest of us.
But instead Don defeated Don Ka Dushman.
"Oh yeah? Don and what army?"
"Don and his Army Of Chhootey Huey Dushman Ke Chhakkey!"
...Ki Usne Chhakkon Ko Jail Mein Daal Diya ya Enslave Kar Diya!