Nope! I'm not in that good of shape.
I think I started out doing 2 sets of 8-10 of each exercise, except for the burpees - because I suck at those I'm only at 2 sets of 6 right now - and squats - I do 3 sets of 10 of those right now since the guy said they are the most important. Plus, during the 2012 marathon I got a horrible cramp in my butt right at the beginning of mile 25, so I don't want that to happen again. The other change I made is how I do the sit-ups...if you watch the video she comes all the way up. I do more of a crunch-type thing. By cutting it down as I said above it takes me about 30 minutes to complete, and I do it twice a week (would like to do it 3 times but not sure how to make it work with my running schedule).
If you read the comments you'll see that most people indicate that they can't do the entire thing. You'll also find a public Google Doc that someone put together that lists the entire workout, since they don't seem to have that on RunnersWorld.com.
Mostly I like it because, as you said, you can complete the workout with minimal equipment...and I like that it's a full-body workout designed for runners specifically. Enjoy!