There are other factors like the actual physical size of the screen and the design of the phone that are likely bigger purchase drivers. (androidcentral.com)
The devices are surprisingly similar in physical size with the taller and thicker Note 8 weighing in at 52 grams heavier. (androidheadlines.com)
The Note 3 is roughly the same physical size as the Note 2, with bezels being trimmed down to allow for that extra 0.2 diagonal inches of screen. (androidcentral.com)