I believe this is what Render meant. I could be wrong.
If it is, I don't see that there's much of it that isn't part of RPM's core package. Maybe some hairstyles or something. But eitherway it'd be very hard to prove you actually took them directly from Famitsu, unless you went and admitted it, of course. Even then, they're allowing free use of the generator and are probably aware of how it's being used. I'd be surprised if they took issue with it, but to be on the safe side why not try and get in touch via their twitter account?
If you did use it, no it wouldn't be illegal as from my understanding they did not specifically say you can't use it for commercial purposes, therefore invalid case to sue you. This is assuming on release of your product, the terms haven't been updated and you can archive the terms upon release.
For future reference, if you come across a Japanese site and you are not 100% sure of the terms, check out slimmmeiske2's thread where she has kindly translated a vast number of them. If you give her the url, she will translate new ones.