About s6 and s6 duos

Hello guys. I got s6 duos smg920f 5.1.1 but in the back its says smg920fd

anyway, just wanna ask, because i want to root it, Is the process the same in rooting s6 for my duos?
i would like to follow this http://www.theandroidsoul.com/galaxy...ariants-81193/
tnx for helping...