Most of the Uncharted games have been HEAVILY bundled for long periods of time with the PS3 over the years. Also, Uncharted 1 and 2 have been sold together as a game bundle for $20 for years. Skyward Sword wasn't ever bundled, nor has it ever been available for $20. Twilight Princess has been a Nintendo Select for years at $20 and still sells well, so I can only imagine how much higher SS sales would be had it become a Nintendo Select as well. Hell, if TP and SS were bundled TOGETHER for $20, I think sales for BOTH would be significantly higher. Also, Zelda is a more hardcore series that tends to appeal more to console owners than handheld owners, thus why the handheld games don't tend to sell as high. Even still, comparing any of the handheld Zelda games to the Vita Uncharted game, Zelda wins easily. And then, comparing the console Zelda games to the 3 console Uncharted games, Zelda also wins. That's all.
Upcoming Games To Get
Definite: Kirby Star Allies (Switch), Mario Tennis Aces (Switch), Fire Emblem (Switch), Yoshi (Switch), Pokemon (Switch), Kingdom Hearts 3 (PS4), Monster Hunter World (PS4)
Considering: Fe (Switch), Donkey Kong Country Tropical Freeze (Switch), The World Ends With You (Switch), Ys VIII (Switch), Street Fighter V: Arcade Edition (PS4), Kingdom Hearts 2.8 Remix (PS4), The Last Guardian (PS4), Shadow of the Colossus HD (PS4), Anthem (PS4), Shenmue 3 (PS4), WiLD (PS4)