Low compression cylinders two and four

Hi, I got into an accident in my car listed above it is the SHO model. My car ran perfectly before my accident. I thought I just needed a new rim and to replace the inner fender well and bottom splash guard. I was crossing railroad tracks and my wheel went off of the cement panel and slammed down extremely hard. After the rim was fixed, I picked up my car and drove it to the grocery store. I came out and my car would not start, battery was drained. We had to try to jump my car for over and hour and finally it started. Then I get home and notice my car is leaking some sort of oil and running super rough and bouncing when the car was almost at a stop. I took the car to a separate mechanic and he told me my car was leaking from the power train unit (PTU) and the force from my accident definitely could have caused that to leak. He put a diagnostic tester on the engine and apparently my car now has super low compression in cylinder two and four. Like running on sixty and the sixth cylinder is running at 160. He said that he highly doubts that my accident could have caused the engine problem. The insurance will pay for the PTU repair but will not pay for the engine because the mechanic cannot figure out how my accident caused the engine damage. I know it had to cause the problem because my car ran perfectly before I slammed off of the track. I was going about thirty mph when my car slipped off the cement and slammed down to a complete stop, then I had to force the car to drive over the second rail to get off the tracks. Please, please help me!