Wazn here is not simply the meter of a poetic line. It concerns corresponding verbal or morphological patterns. Equal letter counts alone do not settle the issue; the arrangement of sounds and vocalization matters.
“Marfūʿah” and “mawḍūʿah” exhibit obvious structural similarity. “Waqārā” and “aṭwārā” share a closing sound but differ structurally.
A pause may influence how a verse-ending is heard, yet the underlying form of the word remains relevant to technical analysis.