Well all my former studes who are now with Qantas, Virgin, Emirates, Network, Jetstar and others all went via GA and as a result were able to go in with ATPL exams AND hours already done and get a command sooner than someone who had gone into the RHS straight out of flying school.
One just started with an airline and had got 800 in command in just under two years doing single engine single pilot VFR work, charter, fire spotting and survey.
So it's not just getting the airline job, but how long it will take getting a command and a decent return on your investment that matters.
My grads enter the workforce with a training investment of around $80,000 which they can get a return on as pay straight away.