What is the line of distinction between a Brahmana and a Vaishnava?

1. Vaishnavas are pure devotees of Lord Krishna/Vishnu. Brahmanas may not be.
2. Vaishnavas are beyond the modes of nature (i.e. Ignorance, Passion and even Goodness) or in other words they are liberated souls enjoying spiritual happiness in shuddha bhakti in purified Goodness. Brahmanas are in Goodness and thus bound in material world or samsara, knowledge or jnana and happiness or sattva guna.
3. Vaishnavas know Brahman, Paramatma and Bhagavan. Brahmana knows only Brahman (spirit).
4. The 10th Canto of Shrimad Bhagavatam contains a chapter where caste yagnic brahmanas were approached by Balaram and the cowherd boys for food, but the brahmanas didn’t recognize their Lord. However their wives exactly knew who Krishna and Balarama are and surrendered their very lives to Them. This is a very good episode in Srimad Bhagavatam, to understand the difference between Brahmana and Vaishnava.