Women went marginally faster on average than Tokyo, but for them Tokyo was only around 2/3rds the distance.
The men have relatively more climbing than the women, but they won't have the extra distance to cover compared to Tokyo.
50kph average seems very unlikely to me as the fastest guys typically don't go 7 kph faster than the fastest women, even on the same duration.
The best proxy for this is probably TdS 2023, when they did the same ITT on I believe the same day or 1 day apart, and Reusser went 42 kph average and Ayuso went 47.5 kph average