Doing some quick math to value Tier Boosts vs Leveling up.
Level 24 T6 is 1% better than Level 27 T4
Level 27 T6 is 1% better than Level 30 T4
Therefore, 2 extra Tier Boosts beats 3 levels
Level 25 T5 almost identical to Level 27 T4
Level 28 T5 almost identical to Level 30 T4
Therefore, 1 extra Tier Boost equals 2 Levels
That move from Tier 4 to Tier 5 costs 32 Boosts times 2 and costs about 1280 Hard Cash (500 HC per 25). To level up from 25 to 28 costs 370,000 coins which is about 6,600 Hard Cash (4500 HC for 250,000 coins) plus the fuse costs and lots of time.
No wonder the lower level teams around 24-26 can dominate, they spent 1/5th the cash equivalents compared to the older players for equal teams. Or spent 1/3rd the cash equivalents to dominate.
To make it much much worse in the Arenas, when these “lower-level” teams win against “higher-level” team, they get 50 trophies. If they lose it’s just 10 trophies. Even though they are statistically better!!! And it takes just 1 or 2 extra Boost Tiers to achieve it.
I hope my math is right. I almost forgot that boosting requires both Attack and Defense.