You don't know heavy DA pull until you shot an Astra A-80....
Very True! Had one of those in .45 ACP, which was later traded off for a SigArms P220A in .45 ACP.
While the P220 had a better Trigger, it's high bore axis made it a harsh recoiling .45. The P220 lost out to my .45 Witness and was sold off to fund my L1A1 FN FAL Rifle Project.
High Bore Axis probably makes the Arex Zero 1 a slightly harsher recoiling 9mm, but I would have to shoot one to know.
Astra A80 in .45 ACP
SigArms P220A with Hogue Grips and 3 spare Magazines