We are not economically as powerful as the US, but that is mainly caused by decades of the petrodollar. The hostility versus science in general in the US has reached a new height, which already caused a massive brain drain. The damage to federal institutions will take decades to fix if y'all ever get together long enough to even start doing so, and the next "dear leader" in that timeframe can wreck any progress you made to recuperation what you've lost.
Your countries voting decisions have destroyed trust into your democratic nature and into how well your institutions are equipped to deal with a traitor like Trump (hint: they aren't, not one bit, and it has been this way since Nixon and Reagan). The worst damage that has been dealt are the attacks on NATO and the absolute disregard for the territorial integrity of your allies. This is something we CAN'T forget, because it means you left behind the structure that gave your place in the world in the first place: a strong military and economic pact between the US and Europe.
The issues shown up by Trump do not go away when he goes away. Europe in general places a lot of importance into stability between neighbours, thanks to the permanent state of war we have been in for most of our history.
The USA isn't stable, and it won't without it being the result of a civil war, thanks to your civic religion.