Welcome to the Q&A Forum

My opinion is that if it is still one of the most relevant results in the search for that specific keyword then it will rank. I have seen website rank with 250,000+ duplicated pages.

That about liability is what I should think of. About on-page, I actually didn't use it anywhere except in title of tags on some pages with short title tag and it is still ranking good for those keywords even without any single mention of "top" or "best" Anyway, thanks for response. Will try to get some links from bloggers' top lists