My initial response would be no. However, it does depend on what your goals are. First off, there is nothing magical about the bowflex. You can do all of those exercises and much, much more at your local gym.
The selling points of the bowflex are that it can be stored and used from home, and that it incorporates numerous exercises at a wide range of resistance. However, there is absolutely no substitute for squats and deadlifts if you're looking to build muscle or burn fat. Granted, your resistance and number of repititions will vary depending on your goal, but that's irrelivant with the bowflex because you can't do REAL squats or deadlifts with a bowflex.
However, if you want to simply "touch-up" your upper body and maybe work some isolation exercises like bicep curls or chest flies, the bowflex is appropriate. You'll get much better results though by incorporating major compound movements into your routine, like the squat and deadlift.