One reason I think it appears that more RW kids go OTD is that when they do wrong things, its harder to maintain a connection to the community. Wearing jeans is already considered an afront to RW society.
In MO society, its easier to relax on halacha without going completely OTD as you will still be able to stay within society without being ostracized.
It has its benefits and negatives on both sides. I prefer the latter.