> tl;dr; HTTP3 provides a little improvement, but optimizing search speed is much more important in this case.

The article itself shows otherwise:

https://dropbox.tech/frontend/investigating-the-impact-of-ht...

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|HTTP3 vs. HTTP2 | North and Central America | Europe | Asia |

|p25 | -3.20ms / -6% | -2.34ms / -2% | -3.73ms / -2% |

|p50 | -4.21ms / -5% | -3.84ms / -3% | -5.12ms / -2% |

|p75 | -9.03ms / -8% | -11.1ms / -6% | -15.0ms / -4% |

|p90 | -44.9ms / -17% | -47.3ms / -13% | -77.3ms / -14% |

|p95 | -118ms / -22% | -141ms / -21% | -200ms / -22% |

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While the average case was negligible, the edge cases fared significantly better because of HTTP3's removal of the head-of-line blocking in TCP.