Cleveland Browns and San Francisco 49er's- The Browns were by far the best team in the AAFC, winning their championship all 4 seasons of its existence. The 49er's were consistent winners, coming in 2nd place in the AAFC west division every year. The Browns entered the NFL as a powerhouse, playing in the championship game each of their first 6 seasons, winning 3 and continued to be a top team right through the 1960's. The 49er's struggled a bit but held their own upon joining the league.