Considering SandForce sells controllers to multiple vendors isn't the only difference between them how they choose to provision the drives. I know there can be hardware differences, but lets say we have two drives with basically the same internals. Lets also suppose that Drive X is faster than Intel's equivalent, but Intel's is cheaper (not likely but stay with me here). Now you may be able to tweak the Intel drive's settings and get it to match or closely match Drive X for cheaper. That could be a good use.
Or you want to use the consumer level drive in a small business. You don't want to spend the money on the enterprise level drive so you take this new drive, reserve more space for failure (such as dropping the 250GB down to 220GB or something) and continue on.
Overall I agree that this won't be much use to most people but it does have potential for the unusual cases.