I dunno. On Emperor, Seondeok is generally double or tripling people in science so I'd expect her to be faster and I guess they could win by turn 300. Maybe. However, on Deity, it's usually possible to win faster, so that's kinda moot too. I did a t260'ish science win when I was isolated and didn't war until t200 so that could have been faster. (Korea though). Nobody was threatening victory except Chang (notice he gets really strong the higher you go) but I just bombed him into oblivion and that really just summarizes why it's ultimately all moot.