Update: Gov's office didn't dig up the study. On facts in evidence, including a closer look at whatall is included in Manhattan, my most plausible explanation is that the study results were not what I remember, whether that was misdirection or misremembering. Even though I could see a case for the tax draws being even bigger, it doesn't overcome the prima facie implausibility.
Thanks for the update; "it ain't what you don't know but what you know that ain't so that kills ya," as I've seen attributed to Twain (but every quote has been attributed to Twain so grain of salt)
On facts in evidence, including a closer look at whatall is included in Manhattan, my most plausible explanation is that the study results were not what I remember
One more possible explanation. NY state is not the most coherent organization and I've seen sets of statistics for NY counties that just did not include NYC boroughs. Evidently, even though they are counties, they are considered a special enough case to just ignore them on occasion. So maybe your study just said in a small footnote somewhere "Oh, we'll pretend NYC does not exist".
By the way, you might find this report interesting.
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