Absent a critical error or brain fart (like a supply block) or cannon rush, I don't think I've lost to a FFEing Potoss on ladder in weeks IIRC. I'll exempt Entombed Valley from this analysis.
About 2 weeks ago I tweaked my ZvP build to be more roach heavy. Muta play is good, but it's not super safe and requires lots of micro and perfect play.
Now, I basically do the Stephano roach build except I'm actually a lot greedier (like DRG plays) and my aggression comes a bit later. Stephano's build vs my level of opponent is likely better (where pushing the thin economic edge like DRG needs vs top koreans is unnecessary), but DRG's build allows me to make more stupid macro mistakes like supply blocks and missing injects and drones and stuff. And my opponent's timings aren't crisp enough to take advantage of this.
It does seem... a little unfair. That said, if I sit back and just "macro" and quietly take a 4th to the Toss 3rd, things can get unfair the other way.
If they try and meta me with anything like a double robo, I just kill them with mutalisks or infestors, preferably mutalisks. If they try to take a 3rd, they die. If they try to do a gateway push (this is their best chance), they die if I've managed to scout it (which I will) and correctly divine their timing and unit comp. If they cut an obs to go quicker, burrow will eff em up. If they wait for a robo and an obs, I'll have 65+ drones. If they wait for multiple immortals, I'll have 4 hatches, 3-4 queens, 1/1, burrow, roach speed, burrow move, 80 drones and 200/200 supply. I might even have infestors or hydras (but I don't even think that's necessary).
Going to be representing them at IPL next week. Despite him being in a small funk I think this is a great pickup for complexity.
Complexity has now picked up Nada, Killer(sang ho), Heart, and Ganzi. Thats a very strong Korean contingent for a foreign team. Unfortunately their best foreigners are Drewbie and Minigun with qxc somewhere in there too. I guess they have a feature streamer, though, in Catz! (lol)