Despite the recent years, the Cleveland Browns has won 63 more games than the Pittsburgh Steelers. That's just about 4 complete 16 game seasons better.
http://www.pro-football-reference.com/teams/cle/http://www.pro-football-reference.com/teams/pit/The Browns are 95 wins above .500 while the Steelers are just 32 games above .500. By this fact, the Browns are three times better than the Steelers.
Also, consider this...
The Steelers entered the NFL in 1933, while THIRTEEN YEARS LATER the Browns joined. The Steelers had 13 complete seasons to record wins and losses before the Browns even started.
Pittsburgh was able to win 51 games in their first 13 years while Cleveland won 135 games in their first 13 years.
It took the Steelers 3 years to record 12 wins, while it only took the 1 year before Browns matched that count.
It took the Steelers 9 years of their existence to have 1 winning season.
In the Browns first 9 years of existence, they had 9 WINNING SEASONS (To explain it to you Steeler fans, that's 9 in a row). Even Since 1999 (expansion era), it took the Browns only 4 years to have a winning season!
The Browns first back to back losing seasons didn't come until 28 years after they first started. The steelers wouldn't have 2 good seasons back to back for 16 years, but if we're talking about back to back winning seasons it would take the Steelers 25 years before they looked decent.
It took the Steelers 38 years to record a double digit winning season, but only took the Browns 1.
Let me remind you civilians of "Steeler Nation", you have a lot of catching up to do.