No, the second one DOESN'T give the screenshot a comic book look and feel. It looks like a Photoshop filter. In fact, it looks like the exact same filter that every single other screengrab-based comic uses, which means this comic will be neither innovative nor unique. It'll just blend into the sea of other peoples' comics.
While I am usually a major proponent of hand-drawn comics, my advice would be this: If you're making a comic derived from screen captures, let it be that. Use your raw screens. Don't run filters over it that distort the image, in an attempt to "fool" your readership into thinking you somehow did more handwork than simply clicking on "Filter>Artistic>Fresco."
Instead, use filters and touch-up tools to ENHANCE your image. Change the lighting and mood. Denote speed and weight. Even add non-Halo elements to support your story. Halo 3 has a great capture technology, allowing you to photograph its extensively textured in-game models. They're beautifully done- use them! In the end, use Halo 3 as it is, and find a UNIQUE way to make your comic stand out in the crowd.
As we see more and more Halo 3-based comics pop up, the entire genre is going to slip into the same place that Halo 2 machinma did: the market was so saturated by so much of the same old stuff that nobody bothered to watch 99% of it by the last few years. As a graphic designer and marketing specialist, trust me on this. If you want a special comic, you have to make it stand out. And making it look exactly like everyone else's comics is not the way to do this.