Well the election in the US was won by the person who received the most votes while the one in Venezuela was claimed to be won by the person who received fewer votes. Hope that helps.
Why don't you trust the output of the voting machines in this case, but do trust it in the prior case?
In both cases, there are reports of numerical anomalies that are claimed to be statistically unlikely. One elicits calls for validation, the other elicits claims of "election denialism" for similar requests. Strange.