To further add on, yes, PCL injury complications are usually not as serious compared to ACL injuries. Early post-traumatic osteoarthritis is always one of the potential complications in an ACL injury. Rotational instability increase the wear rate of the knee joint, and this leads to early onset arthritis. For the PCL, it is usually not as severe. This of course depends on many factors, like your acitvity level, what kind of sports/ work you do, and the kind of functional demand you place on you knee.
Hope this helps
Dr Sean Ng