According to information available, Jhatka is considered less painful than Halal.
The reference explicitly states that Jhatka is considered "less painful and much more humane than Halal." The rationale presented is that animal rights activists have often called for bans on Halal and Shechita (Kosher) practices due to concerns about the pain inflicted on the animals. It also suggests that Halal is similar to Kosher slaughter, implying shared concerns regarding humane treatment.
