@iJim: Here's a more batman-ish image that I converted. I imaging most of the images I take for the comic will be somewhere between the two in terms of quality. I'll want it to be well lit, like the Batgirl/Robin image, but maybe less colorful/bright.

Either way...here's more, again after just 15 min of playing around.

Original:

Cartoon:

DAP Test 1:

DAP Test 2:

DAP Test 3 -- Mixed 1 & 2 in Photoshop:

The thing is, the "artwork" ones, by their very nature aren't going to have detailed faces. There is a "realistic" paint style, but it's not that impressive. To me, I'm not decided on what filter, or combination of filters, I will use on the final product. I do, however, think it's safe to say that I can successfully take photos, arrange them into comic format, and apply a set of filters in a way that it looks drawn...maybe not amazingly so, but at least enough that comic readers won't be immediately turned off by it.

I would agree, though the first test one stuck out to me the most.

+1 for the cartoon

The cartoon batman actually looks pretty damn realistic 

If you like the painterly look of the DAP Test but want more detail, you could put cartoon on top of DAP Test as a layer and reduce it to 40-50% opacity. Pretty cool.