Just a few weeks ago many people, myself included, argued Pereira (12-2 MMA, 9-1 UFC) had an ironclad case for the distinction after he completed a record-setting third consecutive UFC title defense in a 175-day span with his TKO of Khalil Rountree at UFC 307. It’s been a masterful year for “Poatan,” but boy did Topuria (16-0 MMA, 8-0 UFC …