I think there's a more interesting general question here: what is the "best by" date for great sports teams?
In the 1890's baseball had the original Baltimore Orioles, who won three straight pennants in the middle of the decade. Baseball historians debate about whether they were really the best team of the era: the Boston Beaneaters, (Braves) won five pennants in that decade. But the Orioles produced a number of prominent 20th century managers, including John McGraw of the Giants, Wilbert Robinson of the Dodgers and Hughie Jennings of the Tigers. There was less knowledge of prior generations then than there is now and these managers created the image people had of the era. the orioles were the not only greatest team of their time: they were the greatest team of all time and invented everything in the game, etc. etc. As subsequent great teams and dynasties came along,: The Cubs, the Athletics, the Red Sox the Giants and the Yankees, these aging men explained to younger sportswriters why the Orioles of the 1890's were superior to each of them. Then came the 1927 Yankees and Wilbert Robinson was asked how the 1890's Orioles would have done against them. His reply: "They'd have killed us!"
I was a fan of the 1972 Dolphins, (Larry Csonka was a boyhood hero), who went 17-0 and would have won the Super Bowl by that highly appropriate score if not for Garo Yepremian. Garo's flub became the most enduring image of that team and that plus the fact that the AFC East was a flat division that year, (no one else had a winning record), led many people to downgrade the Dolphin's achievement. I was always defending them and my ace in the hole was that the Fish's two tight ends were Marv Fleming who had been the tight end on those two Packer teams that won the first two Super Bowls and Jim Mandich, who became a back-up tight end for the 1978 Steelers, generally considered the best of the four Steel Curtain Super Bowl winners of that decade. Both had publicly stated that the '72 Dolphins were the best team they'd ever played on. That took care of two of the major contenders for the bets team ever and most of the others were way before that.
Along came 2007 and the Patriots were setting scoring records and going 16-00. Mandich was asked how the '72 Dolphins would have done against the Patriots and he said exactly what Wilbert Robinson had said 80 years before "They'd have killed us." I had to acknowledge that history had simply passed my beloved Dolphins by. Comparing them to the 2007 patriots was like comparing the the 1937 Redskins, who beat the Bears for the NFL title in Sammy Baugh's first year, 35 years before 1972, to the Dolphins. I certainly wouldn't entertain the notion that the '37 Redskins would have been competitive with the '72 Dolphins so why would I think the '72 Dolphins could hang in there with the '07 Patriots. Their achievement was just as great but the days when they could have been expected to line up against a 'modern' NFL team and win were over.
So what is the shelf life of a great team. if it's not 35 years, what is it? Does it vary from sport to sport? We are debating whether the '16 Warriors could beat the '96 Bulls. Would the 2015 Broncos have beaten the 1996 Packers? Is it obvious that they were better? How about the 2015 Royals against the 1996 Yankees? The 2015 Black Hawks against the 1996 Avalanche? I do't see anything obvious there.
Does it become longer as sports develop because their development will decelerate and plateau at some point? The NBA has had four great dynasties: The Mikan Lakers of the 50's, the Russell Celtics of the 60's, the Showtime Lakers of the 80's and the Jordan Bulls of the 90's. I doubt anyone thinks the Mikan Lakers would have beaten the Russell Celtics. As much respect as we have for the Russell Celtics, I think most people would heavily favor the Showtime Lakers and Jordan Bulls over them. The real great debate is the Showtime Lakers vs. the Jordan Bulls, (they did play in the first year Chicago won but that wasn't the realm "Showtime" Lakers). Is it obvious that the 2016 Warriors would have beaten either of those teams? I don't think so. Certainly the gap wasn't as great as that between the Showtime Lakers/Jordan Bulls and the Mikan Lakers/Russell Celtics. I think the game and the players playing it changed more form the 60's to the 80's than it has since.
So what is the 'best buy' date for great sports teams? Is it 20 years? 35? Some point between? Does it differ from sport to sport? And does it inflate as sports mature?