Let's look at the math.
In 2014, Twitch's primetime audience was 715,000 (bigger than some cable nets).
nytimes.com/interactive/20…
Let’s try to get that comparison closer. Assuming that AMA is 50% of Peak, that brings the total down to 357,500.
Let's be conservative and add 400% growth, which raises the primetime audience to 1,430,000.