Thanks for starting this thread...it's great to discuss some of the old myths
. High-beat movements are not always in practice more accurate. While it was the theory that the higher frequency would compensate for power train inconsistencies, the same results could be obtained with better design, construction and finish to lower beat movements. There was a period in the 60's when many manufactures jumped on the high frequency band wagon (Longines and Girard Perregaux come to mind) however some could not meet chronometre standards!
Reading my earlier post again, I feel I wasn't clear regarding the advantage of high-beat chronograph movements. They too are not always more accurate timekeepers, just more accurate stop watches. They allow you to break down one second intervals into more increments and thus are capable of marking time to a smaller fraction, ie, 1/10 of a second for 36,600 vs 1/8 for 28,800.
I'm not sure my reaction time on the pushers would be good enough to take advantage of the difference
. Nevertheless, I have fond memories of a beautiful Ebel El Primero...