When someone knows about 2 methods and prefers 'the wrong method' you should reevaluate your 'correct method'. Ross is a famous workout guy who published a "warrior's guide to underground fitness" which focuses solely on bodyweight exercises. His exercises are very effective (including V ups) but very difficult to perform; I’m surprised you aren't suggesting that looneybin do Russian Twists... The exercises you suggest are only necessary for fanatic weightlifters or fighters (people with a warrior’s mind/devotion)... If a beginner does these exercises he will end up doing it wrong, or reach failure after 2 repetitions and thereby accomplishing nothing (did your arms get stronger from lifting that a heavy box last weekend?) or lose his devotion to these grueling workout techniques. 200 crunches a day is very easy to do, and since there is so much blood flow in your core that a good nights sleep can repair this weak muscle. If you think about it, no muscle ever gets a full day's recovery, you are always using your arms, and yet construction laborers get used to lifting heavy stuff all day long? How is that possible if your muscles need days to heal? So if your arms get stronger despite the limited amount of rest (during sleep) think about your abs, they get much more rest than your arms and therefore would heal quickly according to the logic that you adhere to. Abs also have superfluous blood flow and combined with the excessive rest this muscle gets (most people don't lift with their chests, or continuously lift significant weight, nor do most people run continuously.) it makes the 200 crunches technique quite effective for beginers to intermediates...
Think of it as a graph, to gain a pound of muscle might take a week, to gain an additional pound would take 2weeks and to gain another pound would take 4 weeks(total 3 pounds muscle in 7 weeks) Before the muscle gaining curve gets excessively lengthy you can attain the first 2 pounds of muscle by doing lots of repetitions and eventually these 200 crunches would become less effective over time, so you slowly switch to holding your crunches longer for each one (I hold for 3 seconds which is equivalent to your difficult ab exercises)... A month later (my experience) and you have your 6 pack and you can continue these ab exercises to maintain it (or eat a 2500 calorie diet and still have the 6 pack 10 months later!)...The hardest part is losing the fat, my routine will get you the abs but the fat will hide it. This is where running is holy, the cardio burns the fat and you use your abs when you run, 1 mile a day will suffice.
Lastly my 500 crunches was merely A TEST of my abdominal strength, do you even have any abdominal muscles showing? PS women can't be warriors? Nice implication you pompous asshole, I apologize on your behalf to the all women serving in Iraq, Amazons, female police officers, and every woman with strong devotion like a warrior.