Of course - but I'm taking the top-end / maximum eligible rent, whereas the article is talking about averages, which are unlikely to be accurate in relation to what the majority of people are paying as a % of disposable.
I agree this dataset is not ideal for these sort of calculations, but the figures are supported by my anecdotal experience.
I kind of wish the data presented was more thorough, but that's probably because I'm too close to the industry - the headline is certainly catchy, and the comparison over time certainly more interesting, I just wanted give a heads up about the actual % figure not being representative.