Photon dilemma

Sauciestburrito

I pulled Photon out of the titan crystal. I would've been thrilled, except that I already have a duped 6*r4 photon. So my dilemma is, which Photon should I rank up?

My main use for her will be war and Bgs defense, with some occasional attack matchups mixed in. So which is better, 6*r5 duped Photon or 7*r2 unduped? Thoughts?