"it does not claim to disprove a significant anthropogenic influence on global climate."

I would say it does actually. The article is about the difficulty of climate modeling and really arrives at no conclusion. It's also an article not a research paper. It's a point of discussion, nothing more. I haven't read the others yet. It really doesn't matter though, for every one you find there are twenty that support the current models. That's science. With something as complex as climate modeling you are not going to get the same interpretations of data across the board.