That's actually not true....they look pretty similar....
1st 10 years - 70 total wins
2nd 9 years - 72 total wins
1st 10 years - 43 B1G wins with 1 undefeated B1G regular season
2nd 9 years - 43 B1G wins with 1 undefeated B1G regular season
1st 10 years - 3 10 win seasons
2nd 9 years - 2 10 win seasons
1st 10 years - 4 bowl wins, 1 BCS-level bowl appearance
2nd 9 years - 2 bowl wins, 2 BSC-level bowl appearance with 1 win
1st 10 years - 3 seasons of 6+ conference wins with 2 conference titles
2nd 9 years - 3 seasons of 6+ conference wins with 1 division title
I don't have the stats for draft picks, all B1G selections, all americans, etc....but I'm pretty certain that those are comparable too.
I know it's sometimes easy for "nostalgia" to set in, but in reality, KFs 2nd decade has looked remarkably close to his first decade.....