Beyond that, as the others have said, he mostly seems to have just been more skilled and powerful than his (for lack of a better word) peers. Demandred may give us the best idea; the BWB styles him (accurately or not) as essentially LTT-1, so it's easy to see LTT as just a touch better in all the same areas, areas in which we already know LTT excelled: Strategist, administrator, swordsman, leader and, of course, channeler. There are other similar examples; recall that Be'lal speaks to him of "when we" restored what amounted to no more than Olympic fencing to a deadly form of combat.