I think it can be useful as a foundation to find out a little about what the casino has, but avoid using it for two reasons:
1) I think it does contribute towards dupe content penalties personally, though depending on how it is used, but more importantly…
2) I think casino-provided content is too one-sided and an affiliate should try to provide more “personal” data wherever possible. If you rely on casino content which is basically just “advertising”, players will leave your site on the pretext they are off to some wonderful casino, discover maybe they are not as good as they thought (normally when they come to cashout!) and go elsewhere leaving you high-and-dry.
I remember when i started out as a player, i often ended up with higher expectations than the casino I’d picked from a list somewhere gave me and I wandered off to find another. I prefer to see the “cons” aswell as the “pros” if possible. Nothing p*ssed me off more than waiting 4 or more days for my money to show up when i won so I was forever moving around til I found ones that suited me.
If the original affiliate who got me first time out had done a better job, he’d/she’d have made thousands of bucks out of me by now 
So in essence, I think you’re more likely to get more smaller “one-or-two” time players with standard content but with well thought out balanced content will get bigger fish. Just my opinion.