Yeah, I think it's the lighting and the paint. I think the sculpt looks really good. 3Z's paint work is hit or miss sometimes. The paint here looks a little flat and toy-like, which is a bit of a step back from Jamie, which was solid. (Hopefully they do a better job on Danny, because her proto looked amazing.) I'm hoping it looks better in hand under better lighting.
As for the scar, it's kind of tricky. The look of the actual prosthetic changes over the course of the show. Which I never noticed until I spent a huge portion of my July 4th long weekend watching the marathon! In the early seasons it looks a lot "fresher" with lots of reds and purples in the nooks and crannies of the makeup. But in later seasons, it looks more like an old scar (which it should, since he was burned as a kid) so it has a faded look without as much color.
To be honest, I'm not sure which look I would prefer on the figure.