In Avengers: Endgame, when Tony Stark steals the Infinity Stones from Thanos and inserts them into his own ad-hoc gauntlet, there isn't much of an energy outburst and Stark seems to be able to wield the gauntlet fairly easily:
By contrast, there is much more energy when Thanos gets all the stones:
The Hulk seems barely able to survive wielding them:
I understand that the actual snap killed Tony, but it seems he wielded the stones too easily. Is his nano-suit particularly good at buffering the power from the stones? Why didn't the gauntlet he designed previously for the Hulk do this?