I think Szwagier and G3mini would give Swift/Joe a good run.
One thing I've always wondered is why the fuck have Shotgun and Swift 1v1'd each other only like 10 times in their whole history?
agreed with szwag/g3m
top players don't really like to 1v1 eachother from what i see, especially when both top players have an ego (and lets be honest, most of us have some sort of ego)... not unlike any other closely skilled players with egos reluctant to 1v1 eachother.. because once they 1v1 eachother, the rest of the community can definitively say "XXX is better than YYY"
as a carpenter (and electrician) with lots of slow winters, i've been online during the normal work day when both of them were online and have played in many team games when both of them were on/playing against eachother in team games.. but i feel like it's understood between the two of them "we're not going to 1v1 eachother"
that's my take on it... and i get it because i do the same shit with some players closer to my skill that i don't really want to admit is better or they don't want to admit im better .. or neither one of us want to take the chance of 1v1ing eachother to find out who is better