They are priced equally...
The only imbalance is that the current price of SPS is allowing for a discount...
I do not understand how this is complicated.
5000 DEC
5000 Credits
1400 SPS (current price is allowing for a discount)
There is no "discount" only a variance in market valuation and thus the incentive to spend the SPS, so the DAO gets a buttload of SPS for the Reward Pool.