As far as I understand this series, this is a response from Nittaku to the Tenergy series and the Vega series.
With three rubbers, everything plus and minus is clear to me:
G1 is Tenergy 05 or Vega Pro (gold standard),
C1 is Tenergy 05Fx or Vega Europe (same top sheet but softer sponge),
S1 -...