My position with the ops eng hat on has always been that TODA=ASDA is irrelevant .. further, depending on the runway numbers and the AFM data, especially the V1/Vr range available, it may not be possible to adjust to the declared distances. The concern is more with what the aircraft can produce rather than what the runway offers.
it will always produce a greater OEI mass
Some thoughts here -
(a) I would expect much the same outcome. Just my conservative engineer nature to avoid "must" where "may" can be used reasonably .. one occasionally finds something in the way of the exception coming out of the woodwork to bite one on the tail should one be excessively pedantic in one's opinions.
(b) the calculation cannot be done solely for the OEI case .. the AEO case often is limiting depending on the aircraft and the runway dimensions.
(c) some aircraft don't offer the option of non-BFL. As I recall the DC9 was in this arena ?