No....
Every other weapon that I have found has an X counter part........in some form or another whether it is actually called an X or Heavy weapon.....even plasmas got upgraded.....but not EGS's, Hellbores or Fusion's......that in and of itself unbalances the game when playing Hydran or Lyran against any other race....even the fracking ISC gets to benefit from the X refits...like the PPD's are not bad enough...
Is that from a SFC or SFB perspective, because G2s are so cheese.
Ok. Stop it right there!
The Ph-G2, the PLaE, PLaX, The "Heavy" phasers and "Heavy" Photons and "Heavy" Disruptors were all Taldren inventions, inaccurate SFB-wise and way overpowered. (especially the Ph-G2)
The PhX is.. close to the truth, but even it isn't right now-a-days: they removed the Overloading (1.5X damage) but kept something SFC doesn't have: the pulse.
ie: a Ph-1X can pulse as 2 Ph3s defensively.
.. and that's just the beginning. There's more.