Forcing Retreat in Melee / TFT

[Aman]

In Melee, under "Forcing Retreat" it seems to indicate that you force someone to retreat if you Hit them and don't get Hit in return.

"Hit" seems to indicate "taking damage" not just being Hit [which may result in no damage due to a lousy damage roll or armor, etc], because of this parenthetical statement "...hits taken by the enemy's armor don't count".

My Legacy "In the Labyrinth" book removes that explanatory phrase, and seems to indicate that any Hit [and not being Hit, regardless of damage] allows you to force someone back.

So I'm presently inclined to play "Melee" with you need to do damage to Force a Retreat, and change it later should I use ITL.

But I'm open to the opinion of others better informed!