The way I'm understanding it is that the current, pre-update Diamond 1 rewards are the equivalent to 10x, so after the update, if you're Diamond 1 and earning 2x rewards, you're actually incurring an 80% nerf to what you'd be earning now pre-update.
As far as which is better, you could look at Chest EVs by league and math out an 80% penalty to Diamond 1 and then compare that to the EV for Silver 1.
It really depends on the number of chests in Silver vs the number of chests in Diamond, but chest for chest, I agree.
If you figure half as many chests per league you go up...
100 chests in Silver would give you an EV of $2.70
25 chests in Diamond would give you an EV of $1.16
There's also other factors to consider though. You could pull a lot more chests in Diamond than the example I gave, you have a higher chance at pulling packs in Diamond, the SPS multiplier is higher in Diamond, you have better odds of pulling GF cards, etc.
Finally, there be a new multiplier applied to the modified Reward Points which will be based on the amount of staked SPS the player has in their account (both owned and delegated), which will determine the final Reward Points earned from the battle.
It won't affect what's in your chests but it will definitely affect earning them. If you're taking a huge penalty to your RP, it's going to take more battles for each chest you earn.
Good catch on individual chest EVs though. I'm not sure why I was originally calculating those with a penalty.
The way I'm understanding it is that the current, pre-update Diamond 1 rewards are the equivalent to 10x, so after the update, if you're Diamond 1 and earning 2x rewards, you're actually incurring an 80% nerf to what you'd be earning now pre-update.
As far as which is better, you could look at Chest EVs by league and math out an 80% penalty to Diamond 1 and then compare that to the EV for Silver 1.
2xDiamond is definitely more
It really depends on the number of chests in Silver vs the number of chests in Diamond, but chest for chest, I agree.
If you figure half as many chests per league you go up...
100 chests in Silver would give you an EV of $2.70
25 chests in Diamond would give you an EV of $1.16
There's also other factors to consider though. You could pull a lot more chests in Diamond than the example I gave, you have a higher chance at pulling packs in Diamond, the SPS multiplier is higher in Diamond, you have better odds of pulling GF cards, etc.
Lots to consider.
EDIT: Maths
Is this change related to chest rewards?
I think this change will only impact to the ranked battle SPS reward, and nothing related to chest rewards.
It won't affect what's in your chests but it will definitely affect earning them. If you're taking a huge penalty to your RP, it's going to take more battles for each chest you earn.
Good catch on individual chest EVs though. I'm not sure why I was originally calculating those with a penalty.