Personal Interpretation on majorcharacters of "King Lear"

The older daughters of King Lear, Goneril and Regan are "suck-ups", to say the least. The eldest Goneril flatters her father with the physical aspects of his appearance and of his "wonderful" personality:
"Dearer than eye-sight, space, and liberty;
Beyond what could be values, rich or rare;
No less than life, with grace, health, beauty, honour;
As much as child e'er loved, or father found...".
Whilst Regan states that although Goneril had already said all she was going to say (since she is the "same self-metal" as her sister) she could still add more, and so she says:
"Only she comes too short: that I profess
Myself an enemy to all other joys,
Which the most precious square of sense possesses;
And find I am alone felicitate
In your dear highness' love."
She says this with extreme exaggeration as though she is competing with her older sister. On the other hand, Cordelia, who appears to be truthful, and soft-hearted, is the youngest and admits her love for her father by stating it as though she was obliged to do so. Also, she states that her elder sisters already said all that could be said. However, she had believed that her love for him alone would speak for itself andshe would not have to say anything:
"...I am sure, my love's
More richer than my tongue."
King Lear is at first surprised and so becomes lenient or her to elaborate and embellish her answer, she, however does not do so in the way he expected. The king then becomes furious because Cordelia is his favourite daughter and she has disappointed him. He basically expected more or better.