Hello,
In 7 systems, I did exactly the same thing: I mapped an Earth-Like World (with efficiency bonus).
Here's the result in the Universal Cartographics:
As you can see the values are not the same.
The values are between 709K and 1923K.
I show you an example of what has been mapped for the 1st system:
How to explain these differences?
Is it a bug or the size of the planets matters?
Thank you.
Best regards.
Source: https://www.reddit.com/r/EliteDangerous/comments/18985fi/earthlike_world_values/