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The biggest limitation for handhelds (and Switch 2) versus the Series S is the memory bandwidth.
A Lovelace Switch 2 could've introduced DLSS frame-generation though, which could possibly help get the 30-40fps variable titles to >60fps (with all of the caveats of frame-generation of course) even with the Switch 2's relatively anemic CPU.
I personally don't mind frame-generation in cinematic AAA titles, and don't think most console players would be sensitive to it, but can see why it probably shouldn't be mandatory in games.
Also one would expect 15-30% extra raw GPU power between Ampere -> Lovelace, but I think the T239 probably already has a lot of those gains given how efficient it is, so probably toward the lower end of that performance boost.
But yeah, I think even a Lovelace/5nm Switch 2 would have areas where it is noticeably worse than the Series S. Where the Switch 2 is something like a half tier below the Series S, the hypothetical Lovelace Switch 2 might have been a quarter tier.
