'Grim' or 'Light' fantasy

I am looking for opinions on a dilemma I have and also to see what do you readers prefer. Grim fantasy, or light.

One of my PoV's is more traditional, wheel of time/runelords 'light', and the other is more ASoIaF 'grim'. By that I mean the first PoV has a thirteen year old who does kill because he is a warrior, but I was going for a light feel in the story on his side. As in that you see in wheel of time, or runelords. Very little moral dirtiness in the world in certain areas, though betrayals, wars, famine, and the like do happen quite regularly. Like I said, he was trained to be a warrior in this society since 5 years old. In the other one, I have a PoV that opens in a brothel. The guy had just finished a night with two very young prostitutes (13 or older). In this world commoners become adults at 16, while those of the higher class at 13 (usually).

Now in this set world, equal rights exist between the sexes of the higher class (I haven't decided on the lower) because of a variety of reasons, but the main two being that the 'magical' power is equal, and because of the God's influence thousands of years ago. So a woman can be a Lord, or a man a prostitute without anyone blinking an eye. Now rape does exist in this world and it is common, but it is also always a crime too. Like treason, or theft. In the Wheel of Time, rape is barely mentioned, and usually with vague descriptions, but it does exist. In ASoIaF, rape is more graphic. I am not talking about actually seeing it, but even when it happens off scene you know it happens. No guessing involved.

So my question is if it's possible to have a world where rape, and such has a more graphic 'presentation', yet there is still a 'light' feeling where things aren't that bad. Especially when on of my PoVs takes part (not in rape) in actions like visiting brothels. I don't want to have it where the reader doesn't think I take such issues seriously, but I still want the issues to exist in a lighter world.

Did any of that makes sense? I guess you can only understand if you have read a book like WoT, and ASoIaF. The Blade Itself from what little I read of it seems to manager it well now that I think about it. Maybe Mistborn too.

PS- Even though it may not seem so, this is more for discussion on whether or not what I am going for is possible than me asking for plot help. I try to keep my plot to myself when it comes to actually creating it, plus I have a possible solution I haven't seen done before. Also I want reader's opinions on what they prefer the tone of a fantasy work to be.

Thanks for all comments, and sorry if this went in the wrong forum.

That definitely helped. And I agree 100%. I guess my young MC is gonna have to go grim. The new PoV I wrote today is definitely 'darker' in tone, so I will see what I can do with that. My main hesitancy is that I do like the lighter stories.

Thanks! Especially for understanding what I was talking about.

Well, I am reading through the first book, and it has a light feel. WoT is pretty apocalyptic too, but it is not grim in it's prensentation (which may or may not have been on purpose). 'Light' doesn't refer to death, it refers to how that death is presented. You can be sure that if someone ever dies in WoT, it will be a heroic, grand death if they are on the good side (or maybe we will be surprised in the end). I get the same feeling from Runelords.

And your point is? Once again, it is not about 'content', but 'presentatition'. As as I have already said, I am reading through the first book for the first time, he may go all GRRIM on me later on.