3 gm protein flour vs.4 gm

I am wondering if I will get worse results using a 10% protein flour? I was in Costco and they sell a 25 pound sack of flour but it only is at 10% protein more or less. I am supposing it is actually a bit higher than ten percent but since they only show 3 gm protein [er 1/4 cup, that comes out to 10%. The flour is supposed to be for commercial use. the price is right on it but I son't want to invest in 25 pounds if it is going to deliver bad results.

They also have an enriched bread flour that only comes in at 10% protein so I really wounder about that. I forget what it is enriched with but maybe the additives make it usable as bread flour.

Has anyone tried these flours?