As a swordsman? Sure, Fisto is clearly superior to Hamner. And yes, Ihave Saba~Fisto, in Sabers. Hamner hold his own better against Saba(who is imo >Savage), then Adi against Opress.
He is above the likes of Plo Koon imo, but below Kolar, Fisto, maybe Mundi and the big 4 as duelist, but above all of the RotS council, bar the big 4.
Corran > Kenth as duelist -but not by so much-, but he has massive problems with TK, which Hamner often uses in battles.
Nah, it moves only Saba higher. Corran was implied to be an better duelist rhan Kenth, but nothing more.
The rest are clearly superior to Hamner, him moving higher in the eyes of some(well, actually only Myth, Bart, maybe Nova and myself), doesn't make the rest higher.