Any game has a chance of getting 10/10 before the reviewers have actually played it.
This article is pointless, so is the topic designed to discuss it because it's talking about un-news.
Just look at the first sentence:
"We delve into the factors that could mean Guild Wars 2 has the potential to score the perfect 10."
Translation:
We investigate why MAYBE guild wars 2 MIGHT be 10/10 BUT WE DON'T KNOW YET.
It's an article designed purely to get hits.
I am not saying GW2 won't get 10/10, I am not saying that it will, I am saying that predictions about it before anyone has played it are completely and utterly stupid.