For the record, I put Cubs/Cards and Giants/Dodgers on the same plane, a coin flip for 2nd/3rd. Overall recognition (national or otherwise) is not what makes a rivalry "great", "intense", or "the best", it is those involved, interacting with one another. Can I tell you the top CFL rivalries? No, but that doesn't mean they don't exist. What about the top Ivy league rivalries? I may think of Brown, Cornell, Harvard, Yale?...Well my outside perceptions are uninformed and Princeton in may have a top rival. The point is, a rivalry is not best "ranked" by acknowledgment. Cowboys and any one of Giants/Redskins/Eagles gets more pub than Packers/Vikings, Chiefs/Raiders, etc. Does that mean they are better? Of course not. They may or may not be better, but public perception has nothing to do with it.