The delusions, man, they are real.
Um. So wildly no. So ridiculously no.
The cleanest comparison between the approval ratings of the two presidents is Gallup's daily tracking polls, which are released as both three-day rolling averages and weekly averages. The three-day averages released on December 28, 2009—the day Trump cited in his tweet—showed 51% approval for Obama with 43% disapproval. On December 28 of this year, Gallup released a three-day average showing 38% approval for Trump with 56% disapproval.
So, um, even his fake 47 percent for Obama (it was really 51) is not “approximately the same” as 38 percent. By almost ten points. I mean, you can count that much even in tiny, fat fingers.