As a new user, I appreciate the effort you made in order to make this question on-topic by coming to the meta. It shows effort on your part to be a part of our community! With that said, we are Arqade, Stack Overflow is another Stack Exchange network that works with programming. While it is the biggest and I've often called Stack Exchange, Stack Overflow on accident, I just thought I'd throw that out there on how to name the Exchange networks.
But I am not sure if the question should be active. Because even if the question can be answered technically with relative accuracy, many people don't like the result.
This is irrelevant as far as Arqade is concerned. We aren't worried about the answer to a question making the question itself on-topic or not. Many questions that ask if something is possible have a simple answer of "No, it's not possible." Even though it's not the answer people may want to see, it's an acceptable answer and doesn't change the fact that the question that was asked was on-topic.
So if the question is active, I'm afraid more and more Nintendo fans will down vote my question.
Users on Arqade don't downvote based on if they are fans or not. Here is a great meta post about how people use downvotes. In your case, users downvoted the question because they thought a couple of things:
It wasn't highly researched. Your question asks a rather simple question comparing graphics between two consoles.
It's not useful. Questions here on Arqade that get a lot of attention are useful. See this question, that goes into the usefulness of spending your time actually killing monsters in a game. Your question doesn't solve an issue or is very valuable to anyone really. People are going to buy these consoles for totally different reasons and will never compare their graphic capabilities.
It's a broad question. If there is a specific question or specific hardware difference you want to know about, that would have made a better question. "Differences" between consoles, just like you said, is very readily available information.
I ask for reopen of the above question, but if there is no way to protect myself from being down voted (account reputation is very important to me!), I prefer the question to be in a status that no one can vote (down or up).
If you want the question to be re-opened, you'll have to edit it to be acceptable. Like I said previously, if you can narrow down a hardware specific difference you are looking for, it could be reopened. Your answer goes into more specifics about certain hardware, I'd try to go in that direction. If you take the "close reason" into consideration, you'll allow yourself to narrow it down to not fall into that close reason.
I wouldn't worry too much about your reputation. If you ask good questions and take the time and effort to answer other questions well, you'll see your reputation go up!
The ability for people to vote on your question won't go away, but you'll find if you edit your question to a better one, people may take away their downvote.
We don't really compare consoles or PC hardware, you'll want to go visit another site that does those types of things on the daily. The hardware tag questions is usually used for troubleshooting issues with gaming hardware or how to use certain gaming hardware correctly.
To your edit
I would like to add some similar (almost exact) questions here to show
that if a question asked many times on other place, it can also be
asked on StackExchange (depends on which community though)
Just because you find the exact question on another website, doesn't mean it's on-topic on Arqade. You'll want to read our rules and visit our FAQ before linking a bunch of other sources.