BusinessGlobal.com is a 2 word domain.
I consider Business.Global a 2 word domain as well.
BusinessGlobal.com and Business.global use the exact same keywords after all. The only "advantage" Business.global may have over BusinessGlobal.com is that its 3 characters shorter. But if almost nobody knows it's a real URL then what do these 3 characters matter? I wonder what would happen if you would ask 100 random people in the street to go to the website "business dot global"? I have a feeling many of those will end up at either businessglobal.com or business.global.com.
Besides isn't that the whole point of most new gTLDs to start with? To find some keyword combination before and after the dot that makes sense? But in your example the right of the dot is conveniently left out so you can come to the conclusion that the one-word domain business.com will be more expensive.
The way I see it: Business.com is a truly premium domain, business.global however is as "premium" as BusinessGlobal.com would be. Anyone could have told you that an ultra premium domain such as business.com will always be more expensive (and valuable) compared to a domain such as Business.global, and this without looking at any sales data.
Imo Business.global should be compared to BusinessGlobal.com, and not Business.com. It would for example make little sense for a pizzeria business serving pizzas in a local town area to use a domain like Pizza.global.
So let's do the math using some actual namebio sales data:
BusinessGlobal.com vs Business.global
BusinessGlobal.com - purchase price: $3,688 (Sold in 2008) + 10 years renewal ( $90) = $3,778 for total cost of ownership for 10 years.
Business.global - purchase price: $25 000 (in 2016) + 10 years renewal (.Global uses normal renewal even for premium domains - $60 on average) thats $600 = $25 600 for total cost of ownership for 10 years.
BusinessGlobal.com = $3,778 (and with $9 yearly renewals from that point on)
Business.global = $25,600 (and with $60 yearly renewals from that point on)
If I was an end user I would know what domain I would take.