Really? I didn't think Logan looked "Sad" To me his expression looked more like "Just you wait.." Or "Two can play at that game"
But i guess it can be read many ways.
Having Logan show some sort of soft/sad emotion in this game will certainly give us something fresh to work with and not have him be "arr i'm a mean tyrant king! I kill you and eat your babies! RAWR!" Which is all so boring to me now.. :\
In my personal opinion, i think he is looking at the hero thinking either:
1. Logan is thinking to himself, "so the stage is set for the final battle", that type of thing..
2. Logan is looking at the hero as in noticing how far he has come and has underestimated him.
3.Logan knows what he has to do.
or
4. He knows he may have to kill his brother/sister, all to prevent him from loosing the crown of Albion, therefor he is ready for what lies ahead, (noted that he is posted at the top of the castle with full armor,elite gaurds,sword on his waist,and the crown of Albion)
But... this is just my opinion, does anybody agree?.