I have a question. What's the difference between using SPS-DEC pool instead of DEC-SPS?

As far as locking up DEC, wouldn't adding to either pool result in the same amount of DEC lock up? If so, then I would rather use the SPS-DEC pool since the APR is so much higher. But I have a lot of ignorance in liquidity pools, so please let me know if it makes a difference for your initiative.