In S12 ALONE:
My team, Wu-Tang Financial, started 2-5 - and finished at 9-7. We made it to a tiebreaker game for the playoffs after looking left for dead at the start.
Team Echelon started 3-4 - and finished at 10-6.
gank and the meisters were once 4-4 - coming off of a loss to wtf. - and rallied to finish 10-6. gank's team is in IM right now.
if you had fun you won were also pretty poor at the start of S12 - they're also in IM after winning a playoff game.
It isn't how you start - it's how you finish once teams begin to rise, stagnate, fall, or die. Don't take any stock into records until at least 10 matches have played.