Twitch is still far and away the king of streaming platforms, but in the first quarter of the year YouTube's streaming services began to rapidly gain ground.
According to Streamlab's Q1 2019 report in partnership with Newzoo, YouTube Live's viewership numbers reached 24% of Twitch's total viewership numbers in the last quarter. Despite the gulf between the two, YouTube Live's average number of viewers per channel last quarter was a whopping 52 compared to Twitch's 26 and Mixer's 11.