That first point is not comparing students, it is saying that the H1B visas issued that year all have jobs lined up (which is a requirement of the visa). Those jobs are what the new graduates would normally be competing for.
>>carom+(OP)
And you have to apply to get that job. And the vast majority of companies would prefer a US citizen or an LPR for that job, because there is no guarantee that you will get the visa approved.