In truth, both Tottenham full-backs did well at the Emirates Stadium, despite Arsenal boss Arsene Wenger singling them out as threats before the game (why didn't he deal with them better?).
But Danny Rose arguably proved more of a point than Kyle Walker because of his great assist for Harry Kane's opener. There were few Tottenham players who didn't excel at the Emirates but Rose made a statement as he faces genuine competition for his place from Ben Davies.
No one needs to be told twice that the Spurs hero possesses real quality in the final third but, against Arsenal, Kane proved two things.
Firstly, that the 22-year-old is back on form for sure. Producing once or twice is one thing but this is now three Premier League games in a row in which Kane has netted.
And, secondly, Kane proved he really is the king of the north London derby.
Against Arsenal, Dele Alli proved that there is no occasion too big for him. And yet there was an overreaction to his performance. If any didn't already know the 19-year-old is a quality player... how?
This is a talent who was fearless against Real Madrid over the summer - the best players in the world. He nutmegged Luka Modric, after all!
So Alli didn't really teach anyone anything new with a phenomenal midfield display against Arsenal. He was just consistent with what everyone has already seen (and bouncing back from a blip against Anderlecht in the Europa League).