The series is fun. Ed "battles" another survivor expert with a different set of skills and a different personality each time. One of the other reviewers has got it wrong by saying that Ed wins every time - he doesn't.
If you take it with a pinch of salt, have fun watching with someone else and betting who will win, you will enjoy it. If you are unrealistically expecting an unedited life or death survivor experience, of course you will be disappointed.
Having said that, it is always unclear exactly what is going on, how many days the two competitors took to get out, how far each competitor really is from each other and the speed with which they travel as they supposedly race "neck and neck" for the finish line. Some "wins" seem strange - especially episode two when the person way ahead somehow manages to lose. This isn't really explained and as we have no clue as to the real distances and times, we just think, "Huh!"
There are some daft things as others say: both seem to travel for almost two days across a desert without water; I'm not sure that I believed that certain animals were actually caught; someone was sunburnt on day two but not day three; I didn't believe all the supposed crocodiles lurking everywhere and they only seem to sleep two or three times in this "less than a week" they are expected to take to reach the finish.
I guess, if it suffers it is because there are not enough survivor skills/bushcraft shown to be interesting and not enough of real racing to be the focus either.