ya its a little fuzzy there...its not to hard to get...
basically, the more surface are covered on the graph (originating from x/y axis) within the colored lines indictes how much pleasure u can provide
the ruler shows the importance size plays..it takes into account 3 categories..size, techniques and staying power...
note the exception..the red line, wo has great technique, great staying power, but a small cock..it covers more surface area then mr avg, who has avg cock, avg technique and avg staying power..shows size isnt everythingg, but shows how it increases...
hope explanation helped
blue=mr.perfect
red=exception
green=avg
back=me
purple=mr.pathetic