Could wrong cam timing after belt replacement cause loss of compression

My Barina XC suddenly lost power last week, all I could do was slow down to a safe spot to stop but i heard a wiz noise, I could not start the car again and once I got it towed home I saw that it was a timing belt malfunction. teeth were missing and nothing was turning. So i bought a new timing belt, and learned the water pump had quit working and seized causing teeth from the timing belt to be stripped.
Both of these replaced, had a car savvy friend help with correct belt placement and we did a compression test. only cylinder two has compression. Nothing in the rest. Could this be cam timing error or is it a terminal diagnosis of bent valves? :(