[kuzee]

Anecdotally yes it's a problem if two classes (button choices) are similar, resulting in two "top answers" for a given task. This seems most common for "yes/no" task types where there are only two options, and distinguishing between them is the hard part.

I haven't dug into the data on this across the platform but you've given me the idea to go see if I can find evidence of this, and see if I can improve somehow. There's only low hundreds of projects, so I might be able to find some that have this problem.