That's good to know. I have a PSN account, but I almost never use it, so I'm not really sure how it works. So to read those numbers correctly, it would be safe to say that 34.67% of players who have played DA: O on the PSN have romanced Morrigan at least once? Is that correct?
Basically it's 34.67% of people that played DAO unlocked the trophy for romancing Morrigan. I romanced her and Leliana in the same playthrough to get both of their trophies. I think I romanced Morrigan first, until the trophy popped and then dumped her and romanced Leliana until the trophy popped. Then dumped her 
So it's not to say who took a single romance from start to finish. It's more a case of who met the criteria and got the trophy to unlock. I think it just took a bit of tent action, but it was a while ago so I can't quite remember.
Same for DA2 actually. I couldn't get anyone to like my first Hawke, until about halfway through the 3rd act. Managed to Rivalmance Fenris and had pretty much no romance scenes until that kiss before the final fight and the trophy popped there. My first DA2 playthrough was a bit of a mess.
There is one for Xbox (it's unofficial like the one I use for PSN, but it'll give you a rough estimate) here:
http://www.trueachie...chievements.htm
and
http://www.trueachie...chievements.htm
Looks like a higher % of people have the romance one in DA2 there. Morrigan leads with 45% in DAO and Alistair is behind with 24%. I thought Alistair was way more popular. I prefer Zev and thought I was alone in that
maybe not.