Hmm.. I shouldn't have said the Church acknowledges the shared text; I'm uncertain whether that's true (and almost certainly not for all denominations). I should've said New Testament scholars acknowledge it.
BTW, in case you haven't noticed, there is at present a cacophony of texts and a smorgasbord of practices and beliefs within Christianity. The reason they don't strike you that way is probably merely because you're accustomed to them.
Take virtually ANY variation found between manuscripts in the gospel texts we know of today, and you will still come up with a story that (1) reads as very realistic, not fantasmagorical (2) not difficult to reconcile within itself even if the exact manner is unclear and (3) focuses on Jesus. It is sometimes a bit bemusing to listen to a rabid King-Jameser whale on a convinced eclectic-texter, as the difference in what the resulting bible teaches, at the end of the day, is not enough to fill a thimble.