The key word here is "world's"

Donald Trump’s win is boosting optimism among the world’s top executives

Seems (to me, at least) like a not-exactly counterintuitive but certainly counter-narrative report. 

And notably…

The worries [about tariff threats] are concentrated among heads of larger companies, according to the survey: 13% of those CEOs thought tariffs would have a positive effect on their businesses, compared with 80% of CEOs of the smaller companies surveyed.

Well, well.