Is it worth upgrading a 6* with maxed 5*s of the same character?
I have a r5 5* human torch and a r5* 5* Hercules (awakened at sig 100 something). However, a few weeks back I pulled a 6* torch and I just pulled a 6* Hercules from the Robot ROL challenge. Is it worth upgrading either/both of them or should I focus on my other 6*s?