SO I did my placement for season 3, and tried to look at some numbers:
I took note of the highest Skill Rank achieved by both my teammates and my opponents in Season 2, here's how the numbers crunched:
2771 = My Season 2 Rank
2871 = My Teams Average Season 2 Rank
2898 = My Opponents Average Season 2 Rank
9 wins / 1 loss
1.00 Average Gold award
0.85 Average Silver award
0.71 Average Bronze award
2804 = My Season 3 Placement Rank
While playing almost entirely support during those matches (solo queue), the system gave me a rank LOWER than both the opponents I beat AND my own teammates! That doesn't add up...
The other bizarre thing is the consistency of the average skill rating for the group. With each successive win, one would assume that the system would challenge me against higher ranked players...
My Teams Season 2 Skill vs. Opponents (matches 4 through 10)
2884 vs. 2888
2857 vs. 2962
2755 vs. 3011
2916 vs. 2850
2858 vs. 2846
2903 vs. 2925
2923 vs. 2808
Despite winning, my opponents average skill marginally DROPPED towards the end of the placement process
In fact, the average team skill varied 1-2% during placement, and when considered it's out of 5000, it essentially remained the same.