In terms of memorable badassery, sure, Blaise seems to have more. But Padma feels more relevant, and more developed. It's just that she's so incredibly not in the spotlight that people seem to gravitate toward Blaise as the most ascended of the first years because of how showy his displays were. Outside of the plotting in the battles, Blaise doesn't seem to do anything, whereas Padma is around and interacting with people and even got Harry to do something politically dangerous to protect Hermione's reputation.

I was actually a little surprised that the tvtropes article made Blaise out to be the most notable ascended extra, when he had effectively one moment in the spotlight and the plotting surrounding that, whereas Padma seems like a more consistent secondary (or maybe tertiary) character.