@thedailybagel: I bring up momentum because momentum in comics mean something. Look at Mjolnir or when Hulk blasted into the asteroid or Juggernaut. A moving object being stopped by a object standing means something. How many people can say they moved a charging Hulk? Even if they were standing still in front of each other. Sending Hulk flying like that is rarely seen.
@gav: getting "clowned" (at least where i'm from) means being disrespected. Slapping someone is a sign of disrespect. When Thanos went to black bolt. Thanos went himself. Thanos fought Thor one on one. he didn't send his lackeys. when Hulk showed up, Thanos didn't even acknowledge him. he punched him then sent his minions to deal with him. IMO, that shows Hulk doesn't register as a threat in Thanos eyes.
And just had he had a plan for Champion, he could have disposed of Hulk the same way. People love showing that ONE scan. But every time he's had a chance to face Hulk, he took it. In fact most times he takes on Hulk and another person. Thanos has fought Tyrant just for fun. He's not scared of Hulk
And i agree it would take much more to hurt or put down Hulk. But Thanos has "clowned" or disregarded Hulk a few times
Hulk just doesn't register as a threat to Thanos. Thanos has never had to resort to blasts, to deal with Hulk either. He fights Hulk on his own terms, and always comes out looking better.