in comics... you see Thor talk to him, yell at him tug of war with him... trade light punches, turning his back away thinking he won before hulk finally starts screaming how strong he is gets back up restart the fight and Thor eventually realizing HUlk got strong and decides to stop holding back on the Hulk even if it means killing him..
thor then rants and they start trading city lvling punches for over hlaf an hour...
i dont see Thanos doing any of that with Hulk, no tug of war, no light punches in fear of hurting a mortal, no turning his back.. or not using his exotic powers..