Well, I won 2 matches in wc4 with Dugtrio. In fact, it is the high usage of Blaziken and Typhlosion that force me to use Dugtrio. ppl who think Dugtrio brings them unhappiness should think about the Blaziken and Typhlosion. it's hard to switch when face Blaziken because u-turn gives him flexibility and cc and fb give him strength. if switch wrongly, well, the team is easy to be destroyed. While if switch well, the Blaziken can switch without any cost. So does the Typhlosion with choice specs, well, let's all bring the slowking!
if you are the user of these two pokemons, pls think about which pokemon breaks the NU environment firstly.
if you are not the user of these two pokemons...imagine that my friend. you are using Espeon. and why Dugtrio can trap and kill you? ok, your espeon's hp must be lower than 80% and that means there was an exchange of fire between espeon and the opponent. Before the Dugtrio switchs on, the whole team had been hit seriously. then the Dugtrio switchs on, kills the espeon and his mission is completed. But espeon has destroyed his team too. of course, it is suitable to not only espeon, but also Zoroark, ambipom and so on.
So before you taste the bitterness the Dugtrio brings you, think about the pressure your Dugtrio-fearing pokemons bring your opponent. I think it is the higher usage of Blaziken and Typhlosion that makes the usage and the winning rate higher.