Using SoP has pros and cons. If you're forced to pack less quanta, you're in big trouble. It also adds a weakness to PC and can screw you up when trying to get past Miracle since your Rays might just be 5/5's and you can't burst damage anymore. On the plus side, the Rays can survive more CC from EE's, and if you're too dumb to burst damage with Fractal, you won't have to think about that anymore.
All in all, there's a reason the counter deck has so much quanta and 6 Fractals. It's a good deal more consistent than SoP usage because most losses come from quanta deprivation, not Ray deaths, and SoP usage adds big weaknesses.