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says the fan of the most deserved team in the conference

You would think if the Big Ten did it right,  any 2 teams should have around 5 common opponents.  Afterall there are 9 conference games and 16 other teams you could both play,  plus you could play each other.  So on average that should be around 5, right?

Now I don't know how much that matches reality.  The spread could probably be around 3 to 7 common opponents,  I would guess.

I'm not checking for all 18 teams but I'll do my own as a sample so for Ohio State, there are nine teams that they DO play and for those nine, they also have common opponents as follows:
Penn State, 2:

• Rutgers
• UCLA

Michigan, 3:

• Washington
• Wisconsin
• Purdue

Illinois, 4:

• Washington
• Rutgers
• Wisconsin
• Purdue

Washington, 6:

• Michigan
• Illinois
• Rutgers
• Wisconsin
• Purdue
• UCLA

Rutgers, 5:

• Penn State
• Illinois
• Washington
• Minnesota
• Purdue

Minnesota, 3:

• Rutgers
• Wisconsin
• Purdue

Wisconsin, 4:

• Michigan
• Illinois
• Washington
• Minnesota

Purdue, 5:

• Michigan
• Illinois
• Washington
• Rutgers
• Minnesota

UCLA, 2:

• Penn State
• Washington

Here are Ohio State's common opponents for the eight teams that they DO NOT play:
Oregon, 5:

• Penn State
• Washington
• Rutgers
• Minnesota
• Wisconsin

Indiana, 5:

• Penn State
• Illinois
• Wisconsin
• Purdue
• UCLA

Southern California, 4:

• Michigan
• Illinois
• Purdue
• UCLA

Iowa, 4:

• Penn State
• Rutgers
• Minnesota
• Wisconsin

Nebraska, 4:

• Penn State
• Michigan
• Minnesota
• UCLA

Maryland, 6:

• Michigan
• Illinois
• Washington
• Rutgers
• Wisconsin
• UCLA

Michigan State, 4:

• Penn State
• Michigan
• Minnesota
• UCLA

Northwestern, 6:

• Penn State
• Michigan
• Illinois
• Minnesota
• Purdue
• UCLA

For the nine teams that Ohio State DOES play, they have:

• 3.78 common opponents on average
• 2 minimum (PSU, UCLA)
• 6 maximum (UDub)

For the eight teams that Ohio State DOES NOT play, they have:

• 4.75 common opponents on average
• 4 minimum (USC, IA, UNL, MSU)
• 6 maximum (UMD, NU)

I'm not checking for all 18 teams but I'll do my own as a sample so for Ohio State

For the nine teams that Ohio State DOES play, they have:

• 3.78 common opponents on average
• 2 minimum (PSU, UCLA)
• 6 maximum (UDub)

For the eight teams that Ohio State DOES NOT play, they have:

• 4.75 common opponents on average
• 4 minimum (USC, IA, UNL, MSU)
• 6 maximum (UMD, NU)

Ok  that's probably pretty typical,  I am guessing.  I guess my original estimates were a little high.