You're right Barcelona would've been a good match for the finals and it would've been a bad one for PSG, PSG should be very happy that inter eliminated Barcelona if not it would've been a stumbling block for them because PSG and Barcelona have almost the pattern of football and mind you that's a finals which I know that Barcelona will not joke with it, they would have given all they got that day to make sure that they win PSG, to me despite how PSG is, Barcelona remains their superior unless such has to be proven wrong this time by both of them meeting in finals of such competition like the UEFA champions league.
Whenever Barcelona does a good job of managing the season, everyone thinks the same, that it should have been better or something, but no, for me the best is what happens, it will always be like that. In other words, PSG can show at any moment that they are the best if they win the Club World Cup. Barcelona is not there because of their poor management in previous seasons, so these are things that could not be changed. One good season will not make up for 4 bad years.