It is a word salad, and I hate addressing ambiguous claims because as soon as you pin it down to something, someone can claim that the text was making a completely different point.

That said, instead of addressing their claim, let us use the same thought process and see where we land.

Neither is abusing the power of the AG for political purposes

I would generalize it to "power of the president" for this discussion.

Lets take two examples and compare them.

1. Biden tells the Ukrainian prosecutor that unless they drop the case against Burisma in which Hunter is a stake holder, they wont release the billion dollars in aid.

2. Trump calls Zelensky and tells him he should look into corruption of Burisma and why the prosecutor was fired

In both these cases, the actions are very similar - telling a foreign government what their AG should be doing. However the motivations are entirely different.

With Biden, he had a personal stake and was using the power of his office to stop probe into his son's company.

In Trump's case he was trying to undo this corruption.

So I would say the question whether a President is abusing the power for political purposes will squarely lie in Mens Rea - the motivation behind the action.

So the conclusion would be opposite to what this chunk of text is trying to imply.