It's not a well kept secret. Do a google image search for: ipcc models wrong ; and enjoy the countless graphs that shows the model gap in a idiot proof manner.
People take great offense though because they'd rather (ironically) call you a denier than accept what's in front of their eyes.
The satellite record is even more entertaining. Drop a note saying "18 years of pause" in a pro-agw conference and there will be total upheaval as half of them denies that there is any pause at all as they haven't got the latest PM and the other half blames hidden heat(?) and natural variability.