Thank you! And yeah they explained the parsec thing. The official answer was as parsec is a unit of distance, Han Solo was actually boasting about making the run by the shortest route.
But when you see the movie, it feels like he was praising the Millenium Falcon. Its power. Its ability to travel long distances in short spans of time. Like one would say, ‘o to 60 in 4 seconds’ He used parsec as a time unit. Maybe Lucas should just have said that ‘Yeah. That was a minor error. Won’t happen again.’