I tend to think those discrepancies were left intact for the specific purpose of allowing conjecture and 'wiggling room" within, "interpretation".There are four "witnesses" that disagree. That makes sense.
The problem for Christianity since 350 AD is trying to make them all agree.
IMEO, the Gospel of Mark is the probably the most accurate, Matthew adds to the legend, Luke collects diverse tall tales and John simply piles it high and deep.
Like a built in personal disclaimer system.
'WELL, LUKE SAYS..."
BUT REMEMBER, MATTHEW WROTE THIS..."
"THE VERSION BY MARK IS..."
The end result being that people can claim it's all about personal revelation.