Which has lower viscosity, LS Bell Hammer Gold or LS Bell Hammer? What is the approximate hardness of each?

Under the JIS kinematic viscosity index of mm/c 40c
LS Bellhammer averages 78 cs and LS Bellhammer Gold averages 80 cs.
In the image of car engine oil, LS Bellhammer is 0w-20 and LS Bellhammer Gold is around 5w-20.