I honestly wouldn't know, since I have no data or means of comparatively gauging each series' popularity.
That having been said, Evangelion was a non-Gundam series, it was different, risky, and yet Bandai promoted and supported the hell out of it, so it just goes to show that if Bandai sense the possibility of gain from pushing something, Gundam-related or not, they will do it. That having been said, in my 20+ years of buying Gundam product, or just about anything from Bandai, I've noticed that they like to test the waters with lower price-point skus, and if those are successful, they go up a notch with the skus. If anything, I would tend to think that the current crappy outlook on the global economy would be the greater reason for their not going PG... But that's just me.