I think “decision” has been defined into different scopes and limits by different literature – but the short answer is yes, “decision” here is meant to denote a reference to an external or objective basis – though not necessarily mutually accepted.

“Judgment” seems to connote something more amorphous, perhaps involving personal values. In the old days, we’d hear of judgments based on this or that law or precedent – external or objective norms. Now, judges are limited to merely ruling on procedures and are not supposed to “legislate” or impose their own moral values from the bench. But the common usage seems to denote a preponderant reliance on personal bases.

That said, in neuroscience writings, I see “decision” used more generically as the end result of however the analytical process might have been.

The semantics are all over the place.