In your comment, you add ¨What I 'd like to say is something like that: ´Don't compare those two things because this one obviously loses in comparison with that one.´¨
We can say simply, "They're not comparable."
It's fairly idiomatic, in the United States, to say "They're not in the same league," or "They're not even in the same league." That's a baseball reference but you can hear it used in reference to almost anything.
"So, which coffee do you like better, Starbucks or Dunkin' Donuts?"
"You're kidding! Starbucks and Dunkin' Donuts? They're not even in the same league!"
If you mean that two things should not be compared because they are essentially different in kind, you can say "That's not a fair comparison," or you can say:
"You're comparing apples to oranges."
This is so idiomatic that is often shortened to "Oh, that's apples and oranges."
Example: "You can get a Toyota Yaris for $7,000 les than a Honda Accord." "Oh, come on, that's apple to oranges, a Yaris is a tiny subcompact and an Accord is a nice family sedan."