do you mean the use of the word "se"?
that it can be construed as "belonging to" as well as a preposition of comparison like "than"?
--
then there is the stringing together at the end of which is placed the word "aala" - no repetition.
--
also it is "khalq" and not just "insaan" - which is apt, considering the verses 6:86 and 3:33 mention the superiority of Prophets (peace be upon them) over 'aalameen.
and also because "risaalat" is not limited to humans but there rusul among angles as well (for example, sayyiduna Gibril - peace be upon him)- AND - rusul-al-bashar are superior to rusul-al-malaik (this, if I remember correctly, is also mentioned in al-mu'taqad).
thirdly, using "hamara nabi" instead of "hamara rasul" - is this a subtle refutation of the qadiyanis etc.?
or is it because the verse 4:69, while mentioning those whom Allah ta'ala has specially favored/blessed/rewarded, in the descending order of their ranks, starts at "nabi", whereas the verse itself starts with rasul - "Whoever obeys Allah and the Messenger" (till the end).
Allah ta'ala knows best.
P.S: to be "acquainted with alahazrat's style" - is only possible for those who have read his actual works, widely and attentively, and not just their translations.