This is mainly a bump - I know there are a number of people around here who make aerated/ activated compost tea and should be able to answer your questions better.
I make compost infusion - like tea but not aerated. On my garden, I use this, regular compost, and mulch and nothing else. Works for me.
Re the NPK values, I don't really know. But the compost you start with is probably anywhere between 1-1-1 and 2-2-2. That is considerably lower concentration than most synthetic fertilizers. But it doesn't matter, because the fertilizers, you can only use a very small amount or you burn your plants. Compost you apply in shovelsful.
And the NPK is not what is important about compost tea or why you use it. The point of making it into a tea is that you are culturing lots of micro-organisms. The micro-organisms once added to the soil break down the nutrients in the soil into forms the plants can use. So the plants are fed, but not by you adding NPK.
Plants need a lot more than just NPK any way. They need calcium, magnesium, sulfur, boron, chlorine, copper, iron, manganese, zinc, molybdenum... You can't add all that stuff, you just need to make sure you have healthy soil. Good balanced compost and mulch does that.
Check out the book Teaming with Microbes. We did a book club discussion of it here: