Pretty much what I thought.If you are thinking of going up in weight in the future, it might be worth getting the stiffer arrows. They could be a little stiff for current limbs and a better match for stiffer limbs.
If you get the weaker ones you may find they are too soft for the new limbs.
Another thought is to get the stiffer ones a bit too long and that might soften them enough for the current limbs. Then, if you go up in weight you could shorten them if necessary to stiffen them for the stronger limbs.
Matching can take time and money to find the best arrows. I used to buy three and try them before getting a whole set. Fletch one and leave two bare.