Soulreapers or pure.SR is actually the best iCTF clan in the game, with people like Effen, Luxxiz (he was one of the best 2k4 players ever), Freeman , Kowa ...
And about Vicerant (5.5 k/d ratio playing vctf only...) yeah you could kill him, but probably you're confusing thehotcake with someone other, he's among the top 5 duelers in the usa, plain amazing
kd ratio in vehicle games means squat imo. I might confuse thehotcake to someone else good with a cake in his name though, that's true.
I don't play that much u.s. servers, and only vctf. In any case you can say they're the best in US but you can't really compare them to European players.
All in all I bet there's a bunch of very good players out there, but if they're not actually playing the game anymore I don't think they count.
Duels are not my territory, but I certainly like to watch DarkDude's demos. The guy even beat Hypno in ESL spring cup.