Yes, when you look at heavy vs. light attacks alone. You can weave la + skill | la + skill in the same time it takes charging up a heavy so while the statement is true, heavy attacks are less viable in a high damage rotation than light attacks in general and mostly used for ressources recovery purposes.

However, several of these advices on recaps are indeed outdated, like piercing mark ignoring enemy armour but also making the enemy ignore your armour. @ZOS_GinaBruno Maybe someone could revisit those lines? Would be nice to pass it on, thank you in advance.