Beat me to it. Never really true of any other rivalry I can think of either.
And speaking of rivalries...
'Carlton-Collingwood is the biggest rivalry in the AFL' has to be up there for false AFL media narratives.
It's not the '70s or '80s anymore, or the VFL, which was when the rivalry peaked, meeting in three grand finals in 11 seasons. The pair haven't even met in a final since 1988.
The 'Pies have played in four grand finals this century (five if you include the 2010 draw), while barring 2000-01, the Blues have been largely irrelevant. Similarly, the 'Pies were mediocre for most of the '90s while the Blues played in three grand finals and a few finals series.
Would say the same for Carlton-Richmond. Rare in the AFL era that both have been decent outfits at the same time (1995, 2001 maybe?). Especially the past four years when the Tiges have been flying and the Blues have been as irrelevant as ever. That 2013 final was sweet, but the fact was Carlton didn't legitimately make it, and were an average at best side that year. But the game was nonetheless a small taste of what the rivalry all used to mean and what it once was. I don't think I've ever heard the MCG louder than that day with almost 95k there.
I actually hate Essendon more now and enjoy beating the pricks more, but perhaps it's all relevant to ladder position. AFL era.. 1993 GF (some epic battles throughout that year too), 1999 (the flag the Bombers should have won), 2000 (Bombers 20 wins in a row, Blues won 13 in a row, first and second on the ladder), 2001 (then-powerhouse Bombers looking ominous again, Blues had their measure becoming the only side in that 1999-2001 period to beat them on the 'G three times, by beating them twice in that '01 season..no other team had managed it once). Then fast forward past then and neither club has been a widely touted genuine threat since, but still take great delight in beating one-another...