Why do we get different Nintendo selects games per region?

[Darwinianevolution]

Nintendo Selects are a series of Nintendo games chosen to get a rerelease for a reduced price. Usually this games are some of the best selling ones, and given the chance so sell more. But for some reason there are different lineups per region.

From Wikipedia.

Nintendo 3DS

Game	Europe	North America
Donkey Kong Country Returns 3D	Unreleased	March 11, 2016
The Legend of Zelda: A Link Between Worlds	October 16, 2015	Unreleased
The Legend of Zelda: Ocarina of Time 3D	Unreleased	March 11, 2016
Mario Party: Island Tour	October 16, 2015	March 11, 2016
Mario Tennis Open	October 16, 2015	Unreleased
Nintendogs + Cats	October 16, 2015	Unreleased
Star Fox 64 3D	October 16, 2015	Unreleased
Yoshi's New Island	October 16, 2015	March 11, 2016

 

Wii U

Game	Europe	North America	Australia	South Korea
Donkey Kong Country: Tropical Freeze	April 15, 2016	March 11, 2016	Unreleased	Unreleased
NES Remix Pack	Unreleased	March 11, 2016	Unreleased	Unreleased
New Super Mario Bros. U + New Super Luigi U	April 15, 2016	Unreleased	Unreleased	Unreleased
Nintendo Land	April 15, 2016	Unreleased	Unreleased	Unreleased
Pikmin 3	Unreleased	March 11, 2016	Unreleased	Unreleased
Super Mario 3D World	Unreleased	March 11, 2016	Unreleased	Unreleased
Lego City Undercover	April 15, 2016	Unreleased	Unreleased	Unreleased
The Legend of Zelda: Wind Waker HD	April 15, 2016	Unreleased	Unreleased	Unreleased
Wii Party U	April 15, 2016	Unreleased	Unreleased	Unreleased

Why do we get different games per region? They would surely sell well, none of this are bombas. I'm sure NA would love ALBW, and I certainly want DK CR 3D, even as a digital game.