as long as the cylinders measure a close to equal compression, you should be ok in that area. Could be your method of measure or tester that is resulting in your below average readings. I would personally be trying a lot of things to troubleshoot your problem. Of course, I have spare parts like a mofo and can swap things out eliminating one thing at a time.
It is unlikely that you have a bad plug or injector. Unless all of them were messed up at the same time, the car would still run (like shit though) and sound like crap if either of those two things were bad. I would scratch that off the list.
Maybe I am hearing this right... the car COMPLETELY cuts out, then resumes normal acceleration when you release then re-apply throttle?
Does sound like TPS, but if you already checked that, check the cap/rotor in the dizzy. If everything looks ok there, ehh.... ECU troubles. Could be intermittent injector circuit (intermittent will likely not throw a cel).
But oil on the plug!!??!! OMG. ur F*&#ED.