Nobody has won the Triple Crown in the majors since Carl Yastrzemski in 1967. Nobody has won the Triple Crown in the National League since Joe "Ducky" Medwick in 1937. Back when those Triple Crowns were won, that was considered an accomplishment of epic proportions.
45 years after Yaz's Triple Crown, Detroit's Miguel Cabrera is the latest star poised to make an assault on the impressive feat. There is a real question as to whether or not Cabrera can close the 23 point gap between him and wunderkind Mike Trout in batting average, but there is an even more pressing question as to whether winning the Triple Crown would still garner Miggy the same level of acclaim as the other 13 men who won it in the history of baseball.
The Triple Crown is the same as it ever was: leading the league in batting average, home runs and RBIs. Three very simple stats that have never changed in the way they are calculated. Perception, now that is a whole other matter.