Don't worry, you're not.
That Hartlepool game has been brought up about seventeen times this week, but it's not relevant. Hartlepool were conceding goals at an alarming rate (they lost 7-0 to Rotherham only a few weeks previously), they were already relegated and had essentially given up. Argyle were scoring goals for fun all season. That result wasn't actually much of a shock.
There is absolutely no similarity between that situation and this. There is nothing to suggest that Luton will go goal crazy, or that Stevenage will lie down and give a local rival an easy game. Shrewsbury don't need to win big, they just need to win.