I'm with ArMnHC on this one Wiuff wasn't really a huge loss. He's lost his last 3 matches including his only 2 matches in IFL. If he can't cut it there, he can't cut it in the UFC. Now don't get me wrong I like Wiuff, he's a solid fighter and trains at a good camp, but he isn't "#1 contender match" material.
Back to the topic of the thread, I don't think Buentello is a big loss for the UFC. He's just a solid HW midcarder I enjoyed watching at times. I'm glad someone else snagged him up, he'd been waiting for a bit.