Weird to call the better model "basic" xD.
Surprising that the sales of the normal switch didn't drop with the release of the lite.
The Switch got a whole lot of game releases, among them a new Zelda title, but also Ni no Kuni, Cardfight Vanguard EX, Grid Autosport, Devil May Cry 2 and a Dragon Quest Monsters Remake. I'd rather say it would be odd if the sales of the base model didn't rise with so many game releases.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454