>>45588730>in some capacityYes. As a city so boiled down that it is hardly reminiscent of the original. Totally on the same range as a full region with many more times the tiles, interactible objects, buildings and a couple of caves.
I'll tell you something revolutionary: bigger things take up more space.
>>45588735Beta GSC encompassed all of Japan, so Kanto went down from a full region to a large-ish (and messy) city.
They latter discarded that approach and decided to make it about Kansai alone. Then they wanted to add Kanto as well, but there was no space in the cartridge to fit it, so Iwata coded them a compression algorithm in order to let them fit (most of) Kanto. That much is confirmed fact
http://iwataasks.nintendo.com/interviews/#/ds/pokemon/0/2 and even got into USUM as an easter egg
https://www.serebii.net/ultrasunultramoon/virtualconsole.shtml despite what that braindead mouthbreather would have you believe.
Plus we also have leaked stuff
>>45588741 