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Not quite understand.
Because the (Forum-Giveaway) @Panjul are sharing from his winning it's (Weekend Stream Forum Giveaway). To participate in this giveaway you don't need to create something or do anything. Just post your username in the post, and your account is required to have a minimum of 10 posts. Higher Chance Win mostly writes some unique from are basically same just like pick number colour.
IMO, the factor we need still the page number is your post + person who are picking winners at least aware about you. They only randomly the page they're gonna to choose but the person who are winning is being picked directly by them (not random).
Plus, there is no rules you can't copy-paste other word.
The reason why most people post something extra on this forum challenge, is because it attract attention to their post. So in theory, when your page is picked... your post will stand out from the rest of the posts and it will increase your chance to get picked.
I have friends with graphic designed pictures that gets picked quite often, so it is working. That is why I am against people using my custom created designs, because it takes a lot of time to create something unique for this challenge and then the lazy bas!#$tards just "Copy&paste" your creation and gets picked for the extra effort you put in to do something special to increase your chances to get picked.
That is why I am protecting my work now, with water marks.