The Doctor or The Master

The Doctor: always tries to save the world!
The Master: always tries to destroy the world!                    
Tries to solve the problems!
Creates the problems!
Becomes John Doe / Doctor on Earth
Becomes Prime-minister on Earth  
                                                              
Both: Time lords   
Born on Gallifrey
T.A.R.D.I.S
Awesome          
Males              
Rivals

The Real question is why are they Rivals why do they hate each other and why are they Awesome?
Tenth Doctor = David Tenant
Last Master (sadly) =  John Simm