I hoped to do a more in-depth-for-me writeup, but I don't think that's happening. The post headline both says it all and is pretty obvious IMHO.
The other post-FDR presidents who've had great things happen - LBJ and Nixon - have obvious huge negatives. We've had okay presidents - Truman, Eisenhower, Kennedy, Ford, Carter, Bush I, and Clinton - but their achievements were limited. Reagan, Bush II, and Trump so far - were/are disasters.
Obama led out of the Great Recession, got ObamaCare, and took real domestic and international action on climate change. Lots of other stuff, but that's enough. Lots of mistakes, both his and especially the Democratic Congress for the 6-month period out of 8 years when they had a filibuster-proof majority, but the mistakes don't rank at the same historic level. Obama should feel pretty good.
Trump may reverse much of Obama's top three achievements, but Trump himself is temporary. Those achievements will outlast him.