There was a discussion recently on /r/formula1 about the relative merits of Carmen Jorda and Taki Inoue. They both had dismal junior careers, and Jorda is (thankfully) yet to appear in an F1 car and unlikely to do so, but it led to me looking in more detail at their junior career data.

Both Inoue and Jorda raced for relatively competitive teams in F3000 and GP3, respectively. Inoue's teammate Sospiri was 4th in the championship, while Jorda's 2014 replacement Stoneman won 2 of 4 races with the team. So, the car certainly can't be blamed for their failures.

Looking at their qualifying results, I calculated their median percentage lap-time difference from pole (it's important to use median rather than mean to exclude highly unrepresentative sessions).

• Across Inoue's F3000 season, his median time was 3.5% slower than pole.

• Across Jorda's three GP3 seasons, her median time was 4.7% slower than pole.

In F1, Inoue was then also an average of 1.7% slower than his teammates, who weren't exactly top-level F1 drivers (Papis, Morbidelli, and David Brabham).

I checked the numbers for Giovanni Amati in F3000 -- another name often on the list of worst to ever race attempt to qualify in F1 -- and got 3.4% slower than pole. Are there any drivers who started an F1 qualifying session since 1980 who you think were slower than Taki Inoue in their junior career? Lavaggi or Belmondo, maybe?