There is a huge difference between the claim of ‘this battery technology will allow a range of up to about 600 miles’ and ‘this battery technology will allow a

There is a huge difference between the claim of ‘this battery technology will allow a range of up to about 600 miles’ and ‘this battery technology will allow a range of up to 621 miles’ The former invites you to imagine that the actual Mileage will vary depending on other factors in the car design. The latter suggests some inherent theoretical limit caused by this technology that makes 621 miles into an absolute best case range. Which of these two do you think the original author of the claim was trying to communicate?