It's gonna be mostly a matter of price and stocks on release.
They garnered such a huge install base that it's difficult to think a pretty good chunk of it wouldn't want to migrate on the next hardware almost ASAP if possible.
In that case, having the most robust launch lineup doesn't seem necessary but I do think Nintendo will reserve us good hitters in the first couple months to justify most purchasing decisions.
Don't know if any of it will constitute as true next gen leap like people are convincing themselves of but it's not a point I particularly care about imo.
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