I'll give the point of view from someone who has seen dramatic change. Started at 6'1 257 (I'm pretty big naturally so 210 is a great weight for me). Almost 50 lbs over ideal at the start. 38 pants were getting very tight, should have switched to 40s. chest was pretty fleshy and the love handles (that's where I put on weight) were substantial. 7 weeks later I'm down to 240, wearing 36 pants, the chest flesh is just about all firm and the love handles are less than a quarter their original size. I'd have no issues taking off my shirt in public now as opposed to being horrified just 2 months ago. Also, I've noticed that my tricep and shoulder muscles are pretty defined with a little bit of bicep (mainly it's just tight). Anyway, maybe because I had a long way to go I'm experiencing good results. I've also watched my diet and try to stay at about 1,500 calories per day . This can be done fairly easily eating a lot of chicken, fruit, and vegatables.
Good luck to all those on this plan. I used to be a runner and routinely run 8+ miles. These workouts leave more much more exhausted than anything I experienced on the road. Much better for the back/knees as well.