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We'll get a taste for how this matchup would look on Thanksgiving, but regardless of how that turns out, a Harbaugh family Super Bowl would be a good story.
And a clash of two great defenses would make it even better.
Sure, the Harbaughs squaring off with a Lombardi Trophy at stake would be an unbelievable plotline. Two brothers, both rescuing down-on-their-luck teams, both with visible personalities, meeting with everything on the line. The story writes itself.
But the on-the-field product of a 49ers/Ravens Super Bowl would be the old school fan's dream. You'd have defense vs. defense, the league's best unit against the run and in points allowed going up against one of the best groups, personnel wise, in all of football.
You'd have Ray Lewis and Terrell Suggs vs. Patrick Willis and NaVorro Bowman in the linebacking corps and Ed Reed vs. Carlos Rogers, one of the league's leaders in interceptions, in the secondary. You'd have Frank Gore vs. Ray Rice. You'd even have Joe Flacco vs. Alex Smith!
One should expect a close game Thursday, and one should expect a close game in a rematch in February.
If we don't get Harbaugh vs. Harbaugh, we could get Ryan vs. Ryan. After all, Rex promised us he'd be there, and Rob (who you would think is the head coach based on in-game camera exposure, by the way) is doing all he can to mold the Dallas Cowboys defense into a Super Bowl-caliber unit.
If the Jets and Cowboys met in Indianapolis, the storylines would be bigger than with a Harbaugh reunion because the Ryans would make it so. We'd have 1,000 soundbites each from Rex and Rob about being brothers, being fat, growing up competitive with each other and how both are 100 percent sure their respective teams will come out on top.
Of course, like with Ravens/49ers, both teams have their stars and big names, and watching Dez Bryant or Miles Austin go up against Darrelle Revis would be worth watching by itself.