Generally speaking I saw plenty of dudes that I would never trust my family on an airline with make it through that should have been washed out. I also some dudes who deserved to be washed out get shown the door. But then I also saw a couple dudes who washed out, but were better than some of the dudes that made it through that shouldn't have.
In the end I don't believe a pair of Silver Wings means you will make a great and safe Airline Pilot and I also don't believe if you fall short of getting those Silver Wings that you won't make a good Airline Pilot some day.
Airmanship, safety, and discipline are shared amongst all types of flying, but UPT is a lot different than the civilian world. Don't give up dude. You can get there if you really want.