What does the first para of Lonaphala Sutta mean?

The first paragraph of the Lonaphala Sutta , translated by Thanissaro Bhikkhu, states: > "Monks, for anyone who says, 'In whatever way a person makes kamma, > that is how it is experienced,' there is no living of the holy life, > there is no opportunity for the right ending of stress. But for anyone > who says, 'When a person makes kamma to be felt in such & such a way, > that is how its result is experienced,' there is the living of the > holy life, there is the opportunity for the right ending of stress. I feel that this is not the best possible translation for this paragraph of the sutta. Please explain what it really means.