> the upper end of the range when you math out the sentencing guidelines" and "the amount you get if you take all the base charges and add them up and assume they're sequential" start to blend together because of the sheer scale.
No, it doesn't “start to blend together”. The amount you get when you take all the base charges, assign then the maximum sentence, and have them run consecutively isn’t something that the upper end of the guidelines range coincidentally blends into despite not actually directly applying, its the actual legal limit, and for that reason is directly applied (by assigning the statutory maximum to each offense and having them run consecutively) in the guidelines as the limit case. (It also, while the guidelines are not mandatory and judges may depart above or below them, is the upper limit—and, where it exists, the statutory minimum the lower limit—for sentences that depart from the guidelines.)
> But it's not like when the scale gets big enough, the whale sushi hypothetical math starts becoming the real way we calculate sentences.
Yes, it is. If, after all the other pieces of the guidelines calculation are done and all the offenses that aren’t required to be sentenced separately at their own statutory amounts are grouped in the way that they would run concurrently were the guidelines sentence short enough, the guidelines specify that you look at the total punishment, if it fits in the legal maximum for the offense with the longest limit, you do that and run everything else concurrently, if not, you run enough consecutively, if possible, yo reach the total possible, until you run everything consecutively at its max legal sentence and stop. “Whale sushi” is exactly the mechanism applied by the guidelines in the limit case, not something that the upper end case under the guidelines happens to approximate coincidentally.
> It's just that the guidelines really do try to account for super villain levels of crime.
No, its that the guidelines are, well, guidelines for calculating a sentence which is constrained on the lower end by any statutory minimums and on the upper end by thr statutory maximums for the individual offenses (and also, by statutory rules on which offenses must be sentenced separately and not concurrently with which other offenses), so each of those binding rules is expressly part of the guidelines sentence calculations.