My take is no one really cares about generating SVG, but it's a structured "code" format with very direct visual results. I can't look at 3 piles of code and instantly tell which is best (assuming minimum competence) , but I can judge the SVG outputs very easily. As a quick shot it gets a point across faster and with easier comparison. As a technical comparison it's not so strong, but thats harder to do and judge and less fun to read.