I've been experimenting with looking up some fares listed on these forums using KVS and ITA Matrix. I'm confused about this:

1. I do a return fare lookup in KVS using Fares/PSH between IAH and KHI on Apr 16. The fare shows as $192 CAD.
2. I do a search on ITA Matrix using the fare basis code beside a carrier of interest (EK using Fare Basis Code LLXIPUS1).
3. I select a flight on ITA Matrix. I see that the fare basis code matches exactly the one in KVS tool, but the fare is more than double what's listed in KVS ($404.50 USD).

What gives?