Yes, in terms of foreign policy, I think that W and especially Obama have been profoundly, historically, difficult-to-believe bad.
I'm not trying to downplay Iran-Contra, Gulf of Tonkin / Vietnam, etc., but the last two administrations have taken what was unduly hostile (and expensive) logistical capability around the world and turned it into Empire.
The needs, wants, representative processes, laws, and sovereignty of other nations have reduced in relevance to the Empire's decision making process to zero.
It's interesting you bring up Roosevelt: don't forget - that was an actual, declared war - by Congress. So in terms of assessing foreign policy that's different for sure.
By comparison, Obama has attacked no less than seven different countries in undeclared wars. I think this is, as you say, "much worse."