How sales training coaching can help part1

Does this sound familiar? Seems like a very simple reason not to trust sales training coaching. What if you could guarantee results? If you knew for absolute certain that sales coaching would lead to a measurable improvement in conversions, sales and performance? And that the delivery of this effective sales training would be based on your specific business, team and industry. Every step measured. Each result analysed.
http://www.prosellsalestraining.edu.au/