Cause Forrest is totally arrogant and always talking about how he's dominate Rampage, Liddell, etc.? LOL, Forrest is more modest than his fans are when it comes to where he's at on the pecking order at 205 in the UFC or MMA in general. I bet if he saw a lot of people listing him in a top 10 he'd probably argue you to take him off it, not move him up the list.
And while we're still off topic, I think Vanderlei would do more than just win a decision against Forrest. Rampage could definitely beat him, but I agree it's a closer fight than people would think just looking at the two names on paper.