I don't know how popular his films were at the box office, so to speak, during the '50s and '60s, but it's hard to compare to latter-era Godard. While a bit of an acquired taste for today's film watcher, Ozu did generally make accessible film dramas, and Godard for the last 30 (40?) years has not... so the audience for his stuff, well, it doesn't really make a difference. I'm not sure the last time Godard attracted legitimate commercial interest and didn't just get the usual Euro arthouse funding for his projects.
Anyway, I'm hardly an expert on Godard's full catalog (seen maybe 3 or 4 of his, and only one recent one), nor am I on Ozu (just seen two), but it's not like Jean-Luc ever made a real effort into the mainstream after a certain point (frankly, I could barely make sense of Goodbye to Language, though I only watched the 2D version).