Most turbulent victory by the German saint (8)

I believe the answer is:

windiest

I'm a little stuck... Click here to teach me more about this clue!

'most turbulent' is the definition.
Both the answer and definition are superlative adjectives. Perhaps they are linked in a way I don't understand?

'victory by the german saint' is the wordplay.
'victory' becomes 'win' (a win is a victory).
'by' says to put letters next to each other.
'the german' becomes 'die' ('the' in German).
'saint' becomes 'st' (abbreviation).
'win'+'die'+'st'='WINDIEST'

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

Want a hint initially instead of a full solution? Install my app