This is very good, the models are well made and the action is also very well done.
The animation is very fluid at times, even if it could be smoother at some action-rich parts and and a bit more detailed. I mean, sometimes I had the feeling that it was running on less frames then it was supposed to, and the articulations feel a bit unnatural.
The slower pace is not really a problem, and neither really is the articulations. But if you want my advice, making the models larger will make it easier for you to do more detailed articulating.