Rank Up Advice

Captain_2good

Hey all! So last week I pulled 4* Voodoo. I was pretty happy and so I got him to 4/40 a couple of days ago. Then, the very next day I pulled 5* Voodoo. I got him to 1/25 because I was missing a T3CC to get him to 2/35. Anyways, today I managed to dupe my 4* Voodoo. So, who should I rank up? 4* Duped Voodoo to 5/50 or 5* Unduped Voodoo to 3/45? Thanks in advance!

Captain

heruheru511

5/50 4* Duped Voodoo

Unduped Voodoo is meh, go for duped one.

buffajr

3/45 5* Unduped Voodoo

5*>4*