Dear Pojo,
    Please post this article of why blastoise is better than venusaur or charizard
 
If I'm battling someone and a little kid comes up to you and says, "any of you have a charizard?" I immediately respond, "Charizard sucks!" you know why, well let's look at that.
 
First of all, a good pokemon deck needs multiple copies of cards to be good, and why sacrifice everything just to get probably 2 charizards, which still isn't enough. Even though blastoise is a little bit rarer than venusaur, I was able to get 4 in about 2 or 3 days.
 
All of the powers are pretty good but blastoise's is definately the best.  You can get an articuno, blastoise, or gyarados doing 40,50,60 damage as early as turn 2.  Can Venusaur or Charizard do that? NOPE!  Although you can energy trans onto venusaur, you still need the 4 turns to get those 4 grass energies down. 
Charizard's power is okay, but when you get those 4 hard-earned energies on him, say good- bye to two of them.
 
Venusaur's attack is the best of the three, Blastoise comes next, and then almost every other pokemon and then charizard after Pikachu's gnaw attack.  Even though you need 5 energies to power blastoise to do 60, he is most used to power up other pokemon on the bench and the 5 energies aren't even hard to find.  Okay, Charizard's attack does a hundred, but how many pokemon have a hundred hp, maybe about 5, and what are the chances charizard will be out or even powered up when fighting those 100 hp pokemon, not very good, so to discard 2 energies to kill a pokemon with 30,40,50, or 60 hp isn't very useful when for the next turn you will just be twiddling your thumbs waiting for your opponent to attack your precious charizard. 
   
Okay, Charizard has resistance to fighting, but someone can just switch it with another pokemon of a different type of pokemon, and there aren't any really good mono fighting deck.
 
Now onto weaknesses.  Charizard say good bye, a 4 energied blastoise can kill IT in one hit two.  So Venusaur is weak to fire, but Charizard would kill it in one hit anyway and you still have to discard those energies.
 
That's about it, Blastoise is the best, Venusaur is second best, and who would think the rarest card and almost everyone's favorite (EXCEPT ME) would be one of the worst pokemon cards.