This is why climate researchers talk about probable ranges of climate sensitivity. (climate-skeptic.com)
If it is less, it does not mean it is more accurate but at least it is in a more probable range. (naturalphysiques.com)
I don't recall seeing a recent one that does not constrain the most probable range more tightly than that, even though there are some who have given wider ranges (with low probability). (opinion-nation.blogspot.ru)