Judith saying that there it is very likely that more than 30% of the warming is due to anthropogenic GHG concentrations is rather like an economist saying that it is very likely that the US national debt is more than $3 trillion.
Its actually about $15 trillion, so, of course, that statement is true but it gives quite the wrong impression.
Judith is careful to only say things that on this blog that give a certain impression without them actually being untrue. She’s probably slipped up a few times in this regard, and when she does it no doubt causes her some embarrassment with her more straightforward colleagues who are happy to walk on only one side of the street.