Yeah, I'm not even sure I 100% believe that myself to be honest, Dupont is that good. He could be seen as one of the greatest players to play the game but one area he's already better than Dupont is his service but yeah, Dupont is a bit special isn't he. I'll semi retract my controversial statement. Lol.
With regards to Biggar, this is why I don't like head to heads. I think a fit sexton is better but he's 4 years older and I think you have to factor in those things with injuries and reliability. I also think Biggar gets a tough ride, defensively there is no better 10 imo and aspects of his game like under the high ball and game management, rugby IQ are world class in my humble opinion. What he lacks is pace, if he had that he'd be an all round world class 10 but I guess you could argue that's why Sexton is so good, never had that pace but still complete controls games and his all round game is surperb.