I wouldn't say they are the best, just more popular. Tbh I think the randoms who farm are the best. Aren't as flamboyant and what not but still get the job done.
Why does everyone keep saying Alison she's a Terible farmer she said three times she would farm me till I quit every time she keeps giving up.
There are lots of great ones, ones who don't farm noobs too, ones who don't brag about every single time they hit someone.
How can you judge when you probably don't know EVERY farmer in KaW. As some others have said, not everyone brags on forums.