Just want to mention, in Champions of Kamigawa all five Myojins:
All have "comes into play with a divinity counter on it if you played it from your hand.
Is indestructible as long as it has a divinity counter on it."

-Myojin of Cleansing Fire- 8 con. mana 4/6 White (RT) Remove a divinity counter, Destroy each other creature.
-Myojin of Infinite Rage- 10 con. mana 7/4 Red (RT) Remove a divinity counter, Destroy all lands.
-Myojin of Night’s Reach- 8 con. mana 5/2 Black (RT) Remove a divinity counter, Each opponent discards his or her hand
-Myojin of Seeing Winds- 10 con. mana 3/3 Blue (RT) Remove a divinity counter from, Draw a card for each permanent you control.
-Myojin of Life’s Web- 9 con. mana 8/8 Green (RT) Remove a divinity counter, Put any number of creature cards from your hand into play.

I think R&D didnt make these evenly. Dispite the rule text compare the Green Myojin and the Blue Myojin, your paying 1 less mana for a 8/8 while you pay 1 more for a 3/3. I also remember the fifth dawn series, all 5 Bringers all costed the same, 5/5, trample, and pay 1 of all colors instead of mana cost. I thought that was even and fair, but the thing that angered me was the Bringer of the White dawn's other ability, focused on artifacts not an usefull ability in an all white or no artifact deck.

Hate Free Here

Well, to make things a bit abstract about those Myojin.

Imagine that we are of the same race, same age and same gender.
Are we still completely the same? I think not, you might be stronger, but I may be faster and more agile and can take more punches. See my point?

Ofcourse you can't really compare real life with a card game, but just think about it.

Of course the green creature is ginourmous, thats what Green IS. Blue isn't well known for its fatties (although doesn't the Blue Myojin get flying?), its known for card drawing and being a total pain in the ass. If you look at the 'remove divinity counter' abilities, they're about equal, since if you hardcasted the Blue one you're pretty well off card-wise. And if you still think that's not balanced, look at the Legendary Dragons. Green gets to give out some counters while Blue steals a creature...hmmm. And the Green Dragon requires a triple color investment, not so easy to splash.