I posted an answer to this question but it was deleted by one moderator citing that "this does not answer the question".
This does not answer the specific question about Ramanujacharya's reasons, so I'm deleting your answer for the time being. If you want to edit your answer so that it answers the question, edit it and flag me to undelete it
What is funny,is that the OP had already accepted my answer.So,needless to say that i answered his query correctly.
In any case,
1)What kind of edits are expected from my side?
& 2) When the question asker has accepted the answer why should a Mod interfere and delete it by citing the aforementioned reasons?Any other reasons would have been reasonable
And the main question that was in OP's mind was "Are Shiva & Vishnu one ,Should we or should we not differentiate between them?" which i properly answered by citing scriptures.And OP proved my point by accepting the answer.
Update-I have edited my answer now.Right now it looks like a good partial answer with ample support from the Scriptures.
Update # 2- The concerned(Main) question is now edited in a way so that my answer will look as "not answering the question". Those parts to which i was replying to were now removed.So,my this present question is not relevant any more.