Tackling technique, Yes.
But there are different defensive systems and philosophies, just as there are different attacking plays.
Penrith and Canterbury operate with line speed as their defensive DNA. Canterbury more so, which is no surprise considering Ciraldo was defensive coach at Penrith. This takes time away from the attack.
For years, Bennett was passive with line speed, focusing more on being a little more on connected and flatline to limit gaps in the line.
You also have different marker systems, they can be different again whether it's in yardage or on the tryline.