Where are they playing? I want to watch them play.
When you say best players what exactly do you mean? Best DM players? Best warfare players? The best players may not all have the highest rank just due to how the ELO system works. The more hours you play, the more ELO points you can gather and the higher rank can be had vs if you do not play as much, your ELO may be static even if your at the upper part of the leaderboards each time you play. Then there is also the PUG players who rarely play PUBS that may not even play on stats enabled servers at all.
The best NA warfare players play on the UMG and T5K warfare servers. The best EU players play on the EU Midway servers, 1, 2, and 5 I believe. EU servers are busy starting about noon US East Coast time and continue until ~9pm or so.
If you're looking for top stats players, just find the goofy umg servers and you'll find them spamming for hours.
If you're actually looking for the best skilled players, you'll need to start pugging in #ut3pugs to find them. Though elix occasionally goes on UMG for fun and to get a 80:3 ratio. :c
For all you players who talk bad about warfare players, I find it amusing. If you really think your a better player than those who play warfare, then join the match and prove it. Talk is all just that, talk. Come play, own, and outscore those warfare players and prove your better. Then you can talk all you want even though it's pretty much just anti UT3 community BS. The fact is that they would end up at the bottom of the leaderboards after the match which tells the true tale of the match.
You will not find me talking bad about other players because I am jealous of their ELO and rank.