Hulk talk better in 'Thor: Ragnarok' (and refuse turn back into Banner)

It's been a couple of years since Bruce Banner started turning into the Hulk in the MCU timeline, so it would stand to reason that his alter ego's vocabulary would be improving.
Mark Ruffalo spilled details about the big fella during Marvel's Thor: Ragnarok panel on Saturday at Comic-Con, including that he won't be playing much Bruce Banner.
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Hulk refuses to turn back into Banner on [the planet] Sakaar because he's a champion gladi