That's not how Pew phrased it. But that's what the accompanying graph, as relayed by Barry Ritholtz, depicts. It illustrates historical job approval ratings segmented by political affiliation of Americans surveyed.
Note the 67 point difference (we'll call it the delta) between Obama's popularity among Democrats and Republicans. That's the highest ever.
Bush 43 had a delta of 58. Clinton rang up a 53. Bush 41 was a 38.
And Reagan's delta was a 52.
Carter was an aberration with a delta of only 27, but that's mitigated by the fact that Carter's popularity among Democrats was incredibly low, which compresses the margin.
Put simply, Obama is the most nakedly divisive president ever. The science, as they say, is settled.
Hat tip: BadBlue News.