Oh, Dana, oy vey--
1-- In essence, all the things you talk about are incorporated in the figure, in the sense that as a practical matter whatever things actually DO matter produce a measurable level of performance.
2-- Once again-- you are attempting to summarize a horse, not a performance. Your saying a horse IS such and such is as silly as my saying a horse IS a 2. He RAN a 2. He PERFORMED that way, ON THAT DAY. Ability and performance are not static.
This is not to say other things shouldn\'t be taken into account when trying to PREDICT performance, short or long term-- we discuss them all the time (time between races, pattern, pedigree if trying something new or in terms of predicted development, etc etc. etc.). But that\'s an entirely different issue.
The things you describe (at best, if you are right) PRODUCED the figure.