IMO, Its good to look at things in that aggregate sometimes but smart money also notices current trends.
If Manny finishes strong he'll have a better first 3 years than Mario did. And about 3 short of Lanes first 3 years. Lane would go on to 10 wins in his 4th year before falling back to 7 wins the next year. Manny will probably get 10 wins next year. A few different bounces and it could have been this year.
Manny is on the same trajectory. You're literally getting the same coach at similar points in their career. He's cheaper, no team mutiny and most of all he has THE qb.