Ange1 is a great IGL that doesn't play like a BOT. Zues is better tactically, but when you have so many skilled players, you don't need an IGL to micromanage players as much. They can play a more loose style while having more frag potential from Ange1, while still having tactics to fall back on. It's how most top teams are playing as of late. Even Na'Vi has been relying more on individual plays.