So far envy is concerned it can be used only upon the non-devotees. In the transcendental world a devotee is never envious of another devotee on account of his excellence but on the contrary if a devotee finds some excellence in other devotees he eulogizes the devotee admitting his own subordinate position. Although in the spiritual world there is no such concept of subordination still devotees on account of being very humble and meek think that way.
In the material world the same thing is expressed in a perverted form. But in the Spiritual world to accept one's inferior position does not mean envious mentality upon the other. Unhappiness experienced by devotee on account of feeling himself inferior is not unusual rather such mentality is impetuous to further development of devotional service.