Why is the gap between 3-C and 3-B so big?

[Spilxson2]

https://media.**********.net/attachments/1128859824738795641/1167151562850848778/image.png?ex=654d1599&is=653aa099&hm=4e704cf25688d084d7b956e0140fe59d91d94ba4f04dcd85b5d19626ec2fc45c&=&width=1813&height=465

It looks like if there are around 800 galaxies then it's considered multi-galaxy level. Wouldn't being around 10 or 50 galaxies still be considered multi-galaxy level?

 

[Lou_change]

Galaxies greatly vary in size for one but it’s also explained on that page.
Instead of doubling the value of Galaxy level, the distance between two galaxies needs to be accounted for as well. The calculation for energy required to destroy two galaxies was done with the assumptions:

• Distance between them as the minimum distance between Milky Way Galaxy and the next closest similar-sized galaxy, the Andromeda galaxy.
• A spherical blast, strong enough to obliterate the contents of both galaxies at the same time.
• Hence, the value obtained is the energy required to destroy two galaxies at a realistic distance.