As a friend of mine once said, there are no wrong threats - only wrong answers. When facing a BSC, that lightning bolt seems fairly useless. When facing a tarmogoyf, hurkyll's looks really weak. When against a smokestack or striplock, swords to plowshares is dead weight in your hand. All of these threats will kill you or otherwise remove you from the game....but only the correct answers at the correct times will do anything. It is typically better to run threats that are themselves answers (qasali, lodestone, revoker) unless an immensely big threat (BSC, tarm, precursor) because ending the game within a few turns IS an answer to later threats. If you have a deck that is slower in establishing the threat (delver, weenies, etc.) it's good to have a smattering of versatile answers to get you through the resistance (counters, bolts, plows). If you have a deck that drops answers or ends the game with a fast threat immediately (golems/shops, storm, belcher) it's best to just go all out and have maybe 1 or 2 answer-alls (chain of vapor, etc.).
Based on this post, I'm concluding that "big blue" or in my case, 8Post, is the best deck to play simply because you don't have to play Razes (obviously useless against Stompy or Crop Rotation), just to be on an even playing field. This is the answer I was leaning towards, but its good to have some reassurance. In the case of big blue being the best deck, I can drop an Ulamog's Crusher or Mulldrifter as a threat AND an answer against Goblins. (Of course I'll still have to play some 1-for-1 removal cards as answers, which is one thing I wan't to avoid by NOT playing 8post, I could potentially change that using the card database however)
Not to get too philosophical, but threats and answers aren't distinct categories. Consider that winning is the correct answer to most threats. Does that make Tendrils of Agony an answer to Blightsteel Colossus? Similarly, is game 1 Leyline of the Void against Dredge a threat or an answer? Turn 1 Trinisphere?
Another good point, Duck. I was on the verge of seperating all cards into either threat, answer, or mana (x,y, and z), allowing me to play around with probabilities using math. You haven't convinced me that I still can't do this to some degree. (Tendrils is most definitely a threat) But I could see how a big guy like Ulamog's Crusher could be both a threat and an answer against the right deck.e o
I like some of the other ideas here, I don't have too much time to think it all over though (I just moved to Hawaii on Saturday). I hope to be playing in my weekly Pauper tournament online tomorrow night, but I could very well miss it due to the time difference. (I have an appt. at 2pm, which is 7pm EST lol) I also hope you guys don't mind I discuss theory from a pauper standpoint. (Its the only other format where 4x Gush and 4x Crop Rotation is legal!!!)