Update with the new PS5 event:
Sept Event | Reveal Event
Youtube (concurrent viewers): 1.2M | 2M
Twitch (PS channel) : 377k | 1.01M
Twitch (all channels) : 2.14M | 3.05M
Twitter (PS account) : 434k (<1 day) | 323k
Hardware reveal youtube views:
SW: 44 million
PS4: 39 million
PS5: 32 million
XSX: 14 million
XB1: 8 million
Expected smaller viewership for the secondary event but Playstation's metrics are in another league compared to Xbox or Nintendo.
The price reveal on Twitter has broken gaming records and will most likely go on to become the most liked gaming tweet of all time (it already is from an official account).