I guess it's just seeing her in a nonanimated form,because as I said I could see her playing the part in live action. It doesn't ruin anything for me it just feels a bit off hearing that voice and seeing that face in live action. I have no idea why.
Oh and the fight between Jack and the drug dealers lasted about as long as I thought it would,all of thirty seconds. You know low level gang members should really just run away when he show up,it's like they are red shirts and Jack is a new alien life form on an uncharted planet.