https://www.reddit.com/r/ContestOfChampions/comments/89vae9/analysis_of_aw_season_1_tier_vs_bracket/
Please have a look at the data collected by someone on the tiers. Lets look at Gold 1 and Platinum 3 brackets.
You only need to be in tier 7 (or tier 6) in order to gain Gold 1 rewards. And you need to be in tier 3 to gain platinum 3. From that, you can clearly see that the alliances in tier 4 are totally shafted. We're playing at a much higher level than tier 7 but sharing the same rewards. Most players can see that and that is why there was so much upheaval in gold top 150 alliances because all the motivated and ambitious people left them looking for platinum 3 alliances.
At the end of the season, we came across quite a few alliances who were totally demotivated because they were in the same position. What's the point of striving in the AW seasons when you can lose 15 wars and still stay in the same bracket for rewards?
I see that platinum 3 is a jump up from gold 1 in terms of difficulty and they need more rewards but equating tier 4 with tier 7 doesn't seem right to me. Hopefully you will consider it for season 2.