it may be easier for some to ski a seeded line than better than a natural line. but for people who arent as good at making quick turns, it can be harder to ski seeded lines. the spaced out natural bumps are just as much of a crutch for some because it gives them more time to make their next turn. the steeper the trail, the harder it becomes to ski a seeded line. check out the course on conclusion sometime, i bet you would have a tougher time staying in that line than you would the natural lines on the skiers right of conclusion
while any bump trail becomes "harder" when it's steeper. you make some good points. when i ski the ol course after the bmmc, generally i find myself getting spit out after a coupla bumps yet i can ski bumps right next to the course just fine. more spaced out, not as deep, more time. the nat bumps seem at least for me, to have better (easier) entry & exits than the hammered slots on the course that require the ability to more or less straightline.