Trump is pure and utter recency bias, and he was too incompetent to really do that much damage that wasn't already there.
I this last "that wasn't already there" part is going to end up doing a lot of work here.
The pre-Trump GOP was a monster but the post-Trump GOP is an existential threat. Trump has singlehandedly weeded out any checks to his (and likely any halfway-decent successor's) power, and he isn't being shy about using it to tear down institutional power that will make 2017 - 2021 seem like a rehearsal dinner.
And this is solely stuff on institutions and principle - haven't even touched corruption or policy yet.
Bush killed a lot more people
Trump was better on the Middle East and that’s about it.
Bush for the world. Edge to Bush still.
Think it's worth drawing out the difference between Bush/Trump the men and Bush/Trump the administrations.
Bush was a weakling who got dragged into war by ideologues he didn't have the ability to overrule or stand up to. Trump was a mad man who got held back by people (sometimes only barely) less constrained than him.
Imagine Trump's temperament, ignorance, and lack of interest in any serious strategy being uninhibited or actively encouraged in the same way that Bush was.