Genuinely speaking, I can see any of these teams make it out of this group. Gen G is an obvious pick and should be on your first seed if you're not a troll.
The rest are all toss-ups in my opinion. While the Chinese scene has been memed for a while, FPX looked pretty legit in Shanghai and I'm sure they've only improved since then.
People like to hype up TH due to their run in Shanghai but for the most part it was Wo0t's fantastic performance that hurled them over the fence.
Since then, they've regressed a little bit with MiniBoo still trying to regain his kickoff form. They took Gen G to map 5 but that series was never close if you actually watched it. They're still a very solid team but I predict that if they are going to make it out of groups, it'll have to be through a run in uppers. If they get to lowers, I think they get bounced out.
Probably going to be the best group to watch because every game will be fought tooth and nail.