That study uses 20 hour fasts that last from 10pm until 6pm the next day. I don't see how that's relevant to regular people following normal dietary patterns.
Here is a study about meal sizes and glycemic index and how they affect insulin response. Figure 2 shows the difference in insulin response based on meal size controlling even for glycemic index of the food int he meals.
Here is a study that finds that insulin response is a modulator of weight loss in obese females.
put two and two together and you can start to make the connection that content of the meals held equal, smaller meals result in a smaller insulin response and thus more weight loss.
Smaller meals alone won't result in weight loss, which maybe is the point we're getting stuck on. What I'm trying to say is that if your diet/exercise plan is one that is putting you on the path to weight loss, you'll probably lose more on smaller more frequent meals assuming total intake doesn't change significantly.
The only interesting data I've seen on fasting is that people who exercise fasted (e.g. first thing in the morning) lose more weight than those who do not, but there's no reason you can't also do that.