2018 Argentina was in a real mess. Over the hill players, low team morale, a coach just brought into the fold a shambles.2018 and 2022, Mbappé was dominant. Both performance, IMO, being better than any of Messi's WC performances.
In terms of overall level/career, yeah, it is Messi by a mile and a half.
France used to have really top class midfielders once upon a time with real style like Zidane but before that like Giresse and Platini. They really are quite vertical and boring now and couldn't unlock a Spanish defence with OAP Navas and a soft CB pairing.