EDIT: There certainly seems to be different quality levels for this particular processor anyway [1], which I'm sure they'll want a premium for higher quality. Feel free to correct me though.
Those are various combinations of IC package, temperature grade, and bulk packaging. They are demonstrating that all the different types they sell have gone through environmental testing. There is no such thing as 'higher quality', generally, but a part with extended temperature range or a faster speed grade does cost more.
I think perhaps my wording was misplaced, but a part that has been shown to reach high temperatures might be more preferable in a charging application - even if they blow up anyway.
Which one is "higher quality?" Those are different lots with the same MTBF?