What do these epithets in the aforementioned sutta mean to you then... "the Tathagata, the Arahant, the Perfectly Enlightened One"
What about "namo tassa bhagavato arahato samma sambuddhassa" (Honour to the Blessed One, the Arahant, the fully Enlightened One.)?
If it disturbs you that the Buddha is an Arahant, perhaps you might find more alignment with your views at...Dharma Wheel (Mahayana / Vajrayana forum)http://www.dharmawheel.net/
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"To argue with a person who has renounced the use of reason is like administering medicine to the dead" - Thomas Paine