Just from what I've read, I think the 1/8 and 3/32 measurements refer to distance between inside plate surfaces. So, admittedly having no knowledge of the particular chains, I'd expect the measurements to still be 3/32. My limited understanding is that, as number of cogs has gone up and available cassette space has remained constant(?), chain plates have grown thinner.

Though I am just a small bear of limited brain.