When editing a question, afterwards (if approved) it will display who edited the question. Recently as I have been editing questions - being grammar/spelling police ;-) - I've noticed that (SOME OF) the high reputation users that have been - for a lack of better terms - stealing the change. They might go in and replace a word with a similar word then approve the edit, so I might have edited upwards of 100 lines, but they edit 1 word and get the credit (Their name is displayed as editing the question). Now this isn't a technical issue, and isn't a real bother, but I tend to be competitive about everything (yes even S.E.) and this seems like a kind of strange system.
Depending on your definition of "Credit": Not true! We don't get the reputation points, you do!
But that's only if we choose Approve and edit instead of Reject and edit
Actually anyone above 2000 rep doesn't get any reputation points for approving any edits nor for editing, so enjoy the rep while it lasts...
We still get our name as last editor below the question or answer that was edited though! So if you mean that by "credit": yes, we do get the credit... until someone else gets it in a subsequent edit... ;-)