No they are not the same. Measure the distance from gooseneck to center of tandem axles, then from center of tandem axles to rear of trailer. Weight the trailer fully-loaded with horses. Now, simple math will tell you the "tongue weight".
FWIW, some 5th wheel RV trailers have as little as 14% pin weight_ Titanium is one brand, then just a few models. A gooseneck horse trailer will have a considerably higher percentage.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"