Seeing as how PS4 and XBO have been pretty close to each other for the most part with PS4 being slightly ahead every month I don't see what's so different about May that would make XBO DRASTICALLY drop to the point where it's not even at 100k.
Hardware Comparison Threads:
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Is Hardware Getting TOO Powerful?
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PlayStation/Xbox/Switch: 2022 Edition
PlayStation/Xbox/Switch Hardware Battle: 2021 Edition!
PlayStation 4/Xbox One/Nintendo Switch: 2019 vs. 2020
PlayStation 4/Xbox One/Nintendo Switch: 2018 vs. 2019
PlayStation 4/Xbox One/Nintendo Switch: 2017 vs. 2018
PlayStation 4: 2015 vs. 2016 vs. 2017