He`s not saying that he is the 4th best President. How did you derive that from that video?
Oh... You know how.
If the President says that he's got a lot done... Then he's obviously saying he's the best EVER!!!
The quote is "I would put our legislative and foreign policy accomplishment in our first two years against any president with the possible exceptions of Johnson, FDR, and Lincoln... Just in terms of what we got done."
So by saying he would put his record against theirs, then obviously he must mean he's better than all of them.
Oh brother.