Oh God. Eli never led the NFL in any statistical category except for INTs (which he did three times). Never had a quarterback rating above 93.6. Never received an all pro or MVP vote. One and done in the postseason 4 out of 6 appearances. He does have 2 game-winning Super Bowl drives against Bill Belichick's defense... so I'll give him that.
Peyton, one and done in the postseason 9 out of 15 appearances. He and Eli one and done a combined 13 out of 21 appearances, which is 62% of the time. Brady, one and done 3 out of 19 appearances (16%).
Super Bowl comparison
Eli & Peyton
4-2
3 MVPs (Peyton's was a gift)
6 TDs
6 INTs
259 Y/G
Brady
7-3
5 MVPs
21 TDs
6 INTs
304 Y/G
Brady will retire the all-time leader in regular season and postseason:
Wins
Division titles
Super Bowl championships
TDs
Yards
Completions
Lapping the field in most of those categories. Brady has bragging rights over every player who ever took a snap in the NFL.