Dan Carter still stands out to me in my head of best ever rugby player and I'll join the bandwagon of not seeing Du Pont as the GOAT yet. He was very well rounded, deadly with converting points with his boot and had consistency in his performance and showed BMT in crucial games in his career, getting MoTM for the 2015 RWC final and in the 2016 Top 14 final when he was in the late stages of his career (ignoring his successes in Super Rugby and the Tri Nations).
He often seemed like the difference between the Springboks and New Zealand. We could match up and fight with our forwards, but never had a fly half that came close to his all round skill combined with kicking accuracy… plus he terrorized us in Super Rugby.
I do think potentially there is some NH/SH bias here as we got a lot of exposure to Carter in Super Rugby and Tri Nations, whereas the perspectives from the north on him were more muted unless you followed those tournaments or perhaps caught those autumn internationals.
Meanwhile for us in the SH, we haven't really experienced or felt much pain being inflicted by Dupont as he doesn't come on SH international tours (I think the last one he was on was the 2017 tour of SA) and there isn't a huge amount of club crossover. He has a great record vs New Zealand, but all those fixtures are home fixtures. He has stood out a lot in Six Nations tournaments, he creates lots of opportunities for his teams, but at this point I don't see him as having the career impact that Carter has. Let's see though, he is still 28 and can still potentially get to that legacy career mould of Carter.
Now putting forward my truly unpopular opinion, I think PSDT has had a more impactful career and is someone I'd rather have in my team in a big match than DuPont. A very different kind of player, but not one that is going to steal the limelight, but two world cups and two player of the years in those RWC years, a critical player who can go 80 mins in Rassie's 7-1 split world and just someone who you can always rely on to absolutely empty the tank.
Surely something controversial in all of that.