system
Given the following post, respond as if you're commenting on Reddit:
human
[Dune/GoT] if the Atreides and Harkonnen houses were placed in Westeros, how would they do?

No God-Emperor/Kwasatz Haderach powers, just based on their political abilities and leadership. The people, not the technologies. It's up to y'all whether or not Mentats count. Maybe make the magic pursuant to the Got Universe as well.
gpt
The problem is that even without Kwisatz Haderach powers, the people of the Dune Universe are the product of thousands of years of a concerted effort to make the best human beings possible.  Because of the Butlerian Jihad, they have honed themselves to do all the things that computer might do.  And while doing that, the rest of humanity has kept pace.

House Atreides has mentats that can process ridiculous amounts of raw data.  You have Swordmasters of Ginaz who are the pinnacle of martial arts training.  You have Bene Gesserit, who are so attuned to the individual movements of others that they can read these and determine who is lying and who is telling the truth, along with the ability to manipulate them with modulations of their voice.

What's more, the noble classes of the Imperium, because open warfare is forbidden, have to deal with a War of Assassins.  Once declared, they got to live their lives knowing that death lurked around any corner.  That tends to sharpen the senses.

The only downside for any House of the Imperium placed in Westeros would be that they would lack the substances they often require for their advanced conditioning.