If you were picking which teams would be undefeated after three weeks in the American Football Conference (AFC), you probably would not have picked the Pittsburgh Steelers and the Kansas City Chiefs.

In the National Football Conference (NFC), you probably would not have picked the Green Bay Packers and the Chicago Bears. They play each other tonight.

While being undefeated this early in the season is noteworthy, it does not mean a team is playoff bound: Remember the 2009 Denver Broncos (started 6-0 and ended 8-8).

So, this is not a column to declare that the Steelers and the Chiefs will meet in the AFC Championship game. It’s a long season.

Yesterday for the first time this season the Chiefs looked like a whole football team – the defense held the 49ers to just one TD (that was scored on the last play of the game). The Niners were the team that almost beat the Super Bowl champs the week before. The Niners were favorites to win the game. Two of the Chiefs running backs had over 90 yards rushing. QB Matt Cassel threw three TD passes. Tamba Hali had three sacks. It was total dominance against a team that is supposed to win the NFC West.

The Chiefs are up by two games in the AFC West as the Chargers, the Broncos and the Raiders all lost.

The Chiefs played their best game of the season on Sunday.

There’s some joy in Kansas City. There should be. The fans there deserve it. But to bring it all into perspective, the Chiefs’ three wins have come against teams that are a combined 1-8.

I like the style of the 2010 Chiefs: Onside kicks. Gimmick plays. Being Aggressive. It’s something that opposing teams will lose sleep over. Their play should pack Arrowhead Stadium for each home game.

On the other hand, the Steelers’ wins have come against teams that are a combined 6-3 and the Steelers’ starting QB has been on suspension. Ben who? It looks like the Steelers could pick a fan from the nosebleed section to play QB and win.

For the Chiefs, the bigger test will come in the next few weeks. The Chiefs have a bye and then go to Indianapolis, then Houston.

Sometimes it is better to be lucky than good in the NFL. It’s also better to be 3-0 and being talked about around the league than being a doormat.