You quote out of the Vedas which was compiled by Vyasdeva. And if you know the whole background, after he compiled the vedas and composed the Mahabharata, Vyas was still not satisfied with the work and so he was in distress, he thought he was missing something important. After Narad made him realise his mistake, He wrote "Srimad bhagvatam" which is all about the glories of Lord Krishna, and Srimad bhagwatam was written cuz Vyas knew that people in Kali Yuga are not that intelligent to understand the details of the vedic scriptures. so bhagwatam like vyas's commentary on his own work (which should obviously be better than any other persons commentary on his work . so i think bhagwatam is the ultimate scripture if u believe in all the Vedas.
Even if we ignore the above thing,your whole argument seems invalid(don't take it to heart tho' lol ) . All the time you talked about VISHNU and not KRISHNA, which is not the matter of discussion. And yes, there is a diff between Vishnu and Krishna. Vishnu is a plenary expansion of Krishna and not Krishna himself. I suppose you know that much after reading Rig Vedas and all that stuff.
Long posts doesnt mean your intelligent. respect those who preach true things. this is india! dont hate.
((correct me if m wrong))