I know live-action on a network called the Cartoon Network rubs some people the wrong way. But, it's just more of the ratings grab we have seen from almost all the cable networks. In this case Variety suggests it's the rare case of network attempting to attract an older audience (older boys and teens):
Further milking and aging the "Ben 10" franchise into teen territory, Cartoon Network has churned out a second live-action movie infused with a slick comicbook feel while at times feeling more like product placement for cars and motorcycles than a movie. Still, "Ben 10: Alien Swarm" has upped "Ben 10's" game in terms of visual effects, and it races along briskly enough that it should connect with the older boy/younger-teen audience that the Turner-owned channel is cultivating (actually, pandering to) with a slew of live-action reality shows. Read the whole review on Variety.
Ben 10: Alien Swarm premieres Wednesday, November 25 at 7pm.