Bush is not in any sense "light years worse." Trump isn't even through half of one term and he's already even managed to dismantle one of the few decent policies that Bush implemented, MAVNI. So far Trump hasn't yet managed to touch the level of catastrophic global war the Bush administration initiated. One may only hope that the Trump administration, stock full of war mongering lunatics as it is, isn't allowed to do so, but all of the indications do not bode well for the future.
I was speaking more directly to the global financial economy. Here again, the Trump administration hasn't yet ushered into the system a crisis like that of 2007-8, but again, it's not even been half of one term. The economic, financial policies the Trump administration is orchestrating are most certainly laying the groundwork for global financial crises that will make the 2007-8 global financial crisis appear but a preliminary.