What if the teams had same amount of wins? What is the tie-breaker? I like the Italian system of playoffs. There was a playoff for the title and I believe it was held at a neutral site. If three or more clubs are tied for first, head-to-head matches are used to eliminate teams until only two are left. This has happened where three tied at the relegation zone. Three teams were tied for 14th place and two must go down. In the head-to-head sweep, the team that was third in points was relegated and the other two played to stay up. There was also a three-way tie for 13th place and one must go down. In the head sweep, the team that was first in points stayed up and the other two played to stay up. What was funny about both cases was that none of teams meet the other in the last two months! Meaning that none of the teams had to face one another knowing that there was a huge match because playoff possibilities!
It seems everyone hates goal difference, but look at CL 2nd group D:
Deportivo 3-1-1 6 GF 3 GA (+3) 10 Pts
Arsenal 2-1-2 8 7 (+1) 7
Leverkusen 2-1-2 8 10 (-2) 7
Juventus 1-1-3 6 8 (-2) 4
A win by Arsenal (at Juventus) and Leverkusen (at Deportivo) would have resulted in a three-way tie for 1st. Or a win by Deportivo and Juventus would give us three-way tie for 2nd. By using the head-to-head sweep, Deportivo and Leverkusen qualifies in both cases. In fact, because goal difference was not the tie-breaker, Deportivo had the opportunity to rest some players. If GD was used, Deportivo could not have afford to rest anyone! GD would have made for two exciting matches.