No. The Steelers were not a wildcard team. They won their division outright.
The wildcard was established in 1994, but the season was shortened by a strike so the first team to win a wildcard was the Yankees in 1995. Three teams have won the World Series as a wildcard, the Red Sox in 2004, Angels in 2002 and the Marlins in 1997 and 2003.
1993 San Francisco Giants won 102 games but were 1 game back and there was no wildcard.
Yankees
The NBA does uses a seeding format. There are technically no wildcard teams involved.
Yankees
New York Yankees with 24
Most World Series won: New York Yankees - 27.
cardinals
Giants. 10,568. Yankees are 8th at 9,817
Dropping balls and voices cracking
As of 2011, the New York Yankees have won the most World Series, capturing the trophy 27 times.