He gets results:
Trump Administration Announces Trade Deal With Britain

I'd genuinely like to know how this is a good result.

In 2023, the avg UK tariff rate on US imports was 3.8%. In contrast, the avg US tariff rate on UK imports was 3.3% - slightly less, but quite close.

With this deal, the avg UK tariff rate on US imports per White House will be 1.8%. In contrast, the avg US tariff rate on UK imports remains at the recently elevated 10%.

That means we consumers in the US will pay up to 6.2% more on average for imported UK goods than we did before, while consumers in the UK will pay up to 2% less for imported US goods.

One could argue it's a very slight win for very specific US companies selling goods into the UK, except if they buy the inputs for their goods from.. pretty much anywhere but the US, since tariffs have now raised prices on goods imported from every country in the world.

One could also argue it's a benefit to the US government in terms of additional tariff (tax) revenue, but in that case, let's call this a tax instead of pretending it's something else.

But what about all the consumers in the US who would buy goods from the UK? Now we're simply faced with paying more for what we used to get for less.

Considering these net effects as a whole, this still seems like a significantly more negative result than pre-tariff, with very little if anyything to celebrate about.