Combine soy sauce, garlic, ginger, and sesame oil. Place tenderloin in a heavy plastic bag; pour soy mixture over to coat. Marinate 2 hours at room temperature or overnight in refrigerator. Remove pork from marinade; pat dry. Mix together honey and brown sugar in a shallow plate. Place sesame seeds on a separate shallow plate. Roll pork well in honey mixture, coating well; then roll in sesame seeds. Roast in a shallow pan at 400 degrees for 20-30 minutes, until meat thermometer registers 160 degrees. Remove to serving platter, slice thinly to serve.