Maybe it is a stupid name (Divine Divinity), but if a game is so addictive and with a strong gameplay, I think not so much games make it so far like DD do :
after all the years it is published (in 2002, almost 10 years ago!!!) today new players begin to play this RPG that won many awards !!
In other words :
if a game is really good, bad title or not, a RPG gamer who read about it and discover that "it's his/her cup of tea", he/she will buy it
I never look ONLY to the title of a RPG. I look to the image (cover) and the text on the back of the cover, go looking on internet, talk to friends who talk about a game, etc ...
If only a title make sence on how much copies were sold ... hmmm ... I defenitely don't buy "Mass Effect" (I find it stupit name, even as New Vegas, ... , but that's also very subjective!)
But I can understand that a strong title can give a developer probably faster (more) money in the pocked (IF the game is also "good"!).
Just my point of view