Balanced trade (Trump Edition) is not achieved by sum total of collected tariffs, but by equality of aggregate/specific tariff rates faced by businesses in each country. Of course USA collects more - it is a bigger economy. By your logic of "balance" Burkina Faso would need to collect the exact same amount of dollar equivalent to achieve balanced trade with USA, even though Burkina Faso is 100 times smaller economically. In Trump's mind this whole thing is not be about the exact Dollar-denominated balance of imports and exports. It's about having an equal opportunity of entry of a foreign business, no matter small or large.
We can spin the philosophies back and forth, but the point hidden in plain sight is about getting access to closed markets and competing there for profit. This point lies at the bottom of it and Trump administration is crafting justification for bringing down some aggregate rates, or specific rates. We haven't heard about it yet, but India has a problem. India runs 150% tariff on liquor and 124% tariff on cars. A country with 1.4 billion population closed itself off entirely from American cars and Kentucky bourbon. Also, when we take average figures from the WTO source in the OP, India tariffs 6.2% on average, while USA reciprocates at 2.4%.
In the end it's about finding new revenue sources, while fining justificadtion for removing protective measures. Sometimes by extortion, other times by bribery or the promise of riches to come. Our world is only getting smaller in terms of marginal rent that can be collected.