Exactly how good is a Starbucks Vivanno?

Interpersonal comparisons of utility are indeed difficult to make because of the imprecision of language. Lauren Henry may think that a chocolate-banana Vivanno at Starbucks with espresso is "SO good" and gush about it for thirty seconds while I may think it is merely "a nice combination" because it is healthy, chocolatey, and full of caffeine. Or perhaps the latter is all that Lauren Henry thinks, she just takes that combination to be even more valuable than I do and thus worth thirty seconds of gush... Or perhaps she thinks no more of the combination than I do, but still thinks the combination worthy of thirty seconds of gush because of her more effusive tendencies... Which is it?

It could be that this question is as insignificant as the thought experiment of asking whether everyone sees blue as you see red, but expresses red in the same way that you express blue. But it could also be more significant, because it would seem to assign more moral weight to certain individuals based on the mere fact that they are more emotional and therefore gain more utility from certain acts - or fewer resources because they are likely to achieve the same utility from them. When we estimate utility, do we mean the mere emotional response, or the situation that normally produces a certain emotional response?