Problems with follow-the-leader AI in follow-the-leader mode

[auriamg]

STK 0.8.1
openSUSE 13.1

I can't explain the problem in my words, so I'm adding the issue description as some quotes from IRC, the time codes aren't links in Trac:
[
2 things: Why does it have power ups, and why is the AI leader kart a bit slow?
19:53 <Arthur_Den> the leader uses the standard AI as far as I know so I don't know why it would be slower than otherwise
[ because some how the player kart outruns the leader AI kart
19:55 <Arthur_Den> yeah you need to stay behind the leader
[<Arthur_Den> often the leader gets hindered by the other AI which is too stupid to know it shouldn't do that
19:58 and causes the player to be in problems when that happens
[<Arthur_Den> true
19:58 that counts as a bug?
[<Arthur_Den> I'd think so yeah
19:58 this could certainly be improved
[19:59] <Arthur_Den> current follow the leader AI is pretty oblivious of the whole mode so it doesn't do like it would if it were tailor-made for that mode

Migrated-From: https://sourceforge.net/apps/trac/supertuxkart/t/ticket/1147