According to the research conducted by the Center for Economic and Policy Research (CEPR), a Washington DC based think tank, it is not unusual that a quick count will find differing results from the more systematic, official count.
More importantly, the results from the official count followed a very similar trend from those of the quick count, and the difference between the two is not dramatically large.
The same research institution was able to conduct statistical analysis that proves the results fall in line with voting trends among smaller rural communities, which are last to be included in the count.
The OAS's attack relies on the "interruption" of the count on election night, but this interruption only applied to the quick count. However, the binding, official count, was never stopped. The OAS, led by its US Ambassador, is defending the rights of the elite it represents.