Jeff - as someone noted, it's a pretty large topic to cover in a 5 minute web post on Christmas eve 8-) Mass of fermentation, length of ferment, is it co-fermented with something, the type of container used (is a container used?), the degree of aeration, the degree of 'weep' removal, temperature control, type of microorganisms used and when introduced, etc all factor into it. Of course, don't forget that the most important factor is, of course, the bean itself and it's genetic heritage. One of the issues you're dealing with in Indo (and they're legion i'm afraid), is that the majority of the genetic material that has been planted is simply not that good for flavor or fat levels, but it can be a high yielding variant. Of course you've got pod transportation issues, CPB pests, emerging phytophthera issues, and not many people ferment. The majority of indonesian stock can, however, be fermented in such as way as to produce a flavor profile that emulates many other origins - but even so, the fat levels will be depressed.
What's right or wrong? It depends on what you want to get - the question in and of itself is sort of like asking if a red car or a blue car is better 8-)