I disagree with this on the basis of differing positions in football. Maybe a DB would have the athletic skill set but I imagine a basketball players athleticism would transition easier across sports. Straight line running, lateral movement, leaping, footwork, body contortion while in the air, hand eye coordination.
A large proportion of basketball players aren't even athletic like that though. If you put Jabari Parker or Ray Felton, Vucevic or Carmelo, Jokic or Ingles up against any NFL player on strength/speed/endurance, how are they gonna stack up?
Even the most athletic NBA players, go by position.
DBs, RBs, mobile QBs against point guards.
WRs and LBs against swingmen.
TEs against power forwards.
DL and OL against centers.
The football players are gonna be just as strong in lateral movement, footwork, and hand-eye coordination while also being much stronger and having better straight-line speed and a move explosive vertical.