Well yes i agree in most cases you wouldn't expect a new ip to outsell a bug series but it had a bigger userbase so it out sold it in the US but life time it didnt. Also i think uc4 will move a lot of ps4s WW and it will do pretty good here in the US but nothing really major.
Edit- i apologize for any mistakes in grammer/spelling since im using my phone.
It depends on how you define 'major'. We know that Star Wars sold over 1m bundles and I see no reason why UC4 wouldn't do the same, in fact, because of the many options Sony have with this bundle (and the vanilla bundle), I can see it steadily selling consoles all year:
UC4 LE Bundle ($400)
UC4 LE + TLOUR Bundle ($400)
UC4 LE + TLOUR + Uncharted Collection Bundle ($420)
UC4 Vanilla Bundle ($350)
UC4 Vanilla + TLOUR Bundle ($350)
UC4 Vanilla + TLOUR + Uncharted Collection Bundle ($370)
Naughty Dog LE + TLOUR + Uncharted Collection (for Christmas) ($400)
The PS5 Exists.