ELI5: Explain Like I'm 5

not fair to compare them

Okay kiddo, let me explain this to you in a way that you can easily understand. Imagine you and your friend both had a math test today. You studied hard and got an A, while your friend didn't study at all and got an F. Would it be fair to compare your grades? No, it wouldn't be fair, because you worked hard to earn your grade, and your friend didn't. The same thing applies when it comes to comparing things that aren't the same. Each thing has its own unique qualities and it wouldn't be fair to compare them. So, remember that comparing things isn't always fair and that it's important to appreciate things for their own individual qualities.