I think these plants are identical.If they are different, it is in the most insignificant way.I.E.( Ishi and Princess Eugenia :) (Babette and R.L. Farquar)
Bob Sabourne is a great plant but glacially slow.If yours is fast Jose, it probably is not Sabourne.I will try and post a pic of my 3 year old example but it is not much bigger than Tim's