Veteran Andy > Rookie Joe Burrow

[fredtoast]

I think you are being a little too restrictive with your sample size.  I think it is more informative to look at all really bad team instead of just the one single last place team.  There usually isn't a significant difference between the last place team and any 5 win team.  So if you look at 5 win teams over the last 15 years you see a few QBs that come in and play at least .500 ball

'05 Vince Young goes to a 4-12 Titans team goes 8-5 as a starter.
'05 Kyle Orton goes to a 5-11 Bears team and wins 10 games as a starter taking them to the playoffs
'08 Joe Flacco goes to a 5-11 Ravens team and wins 11 games as a starter taking them to the playoffs
'08 Matt Ryan goes to a 4-12 Falcon team and wins 11 games as a starter taking them to the playoffs
'11 Andy Dalton goes to a 4-12 Bengal team and wins 9 games as a starter taking them to the playoffs
'12 Robert Griffen goes to a 5-11 Jets team and goes 9-6 as a starter.
'14 Teddy Bridgewater goes to a 5-10-1 Vikings team and goes 6-6 as a starter.
'16 Dak Prescott goes to a 4-12 Cowboys team and goes 13-3 as a starter taking them to the playoffs
'19 Gardner Minshew goes to a 5-ll Jaguars team and goes 6-6 as starter.

The last time the Steelrs had a losing record (6-10) they drafted a rookie QB who went 13-0 as a starter