Why I hate DBZ vs Anything Battle Threads

The Problem:

1. Two different universes. You can compare most comic book universes because they all take place on Earth. Most companies state that the Earth in the comic is the Earth we exist on.
2. Because the DBZ world does not exist in this universe, you have no basis for comparison, just broad speculation. You see a character blow up a planet, well what if the planet had the consistency of Balsa wood? In this universe, we do know of planets that exist like this.
3. What if all of these characters are microscopic? What if MCU./DCU characters are microscopic compared to DBZ characters? You can only speculate...
4. In 90% of the cases, DBZ fanboys start the thread, and it's always a spite thread. Comic fans usually don't start these because you can't debate these match-ups with proof, only guesses.