They can both get there. DC wants someone relevant since JBJ has a fight and Dos Santos since he can't beat Cain can come for some vengeance against his boy. Winner of this fight should fight JBJ!!! 
Jds cannot get to 205 dude is 240 thick, solid and tight.
JDS making 205 is like Lombard making 155.
If Reem beats Mir in proper fashion, I think Reem vs JDS is quite appropriate.