The problem just comes when it becomes so ridiculously absurd that it makes Batman almost superhuman.
I've never seen this happen. Could you provide an example? I've seen Batman use very human cunning and seek edges to outwit or outfight people who think they should just be able to pound him into the ground. It happens in Batman comics, too, it's part of his character, and always has been.
Personally, I'd rather see Batman use his vast resouces (i.e. money and weapons) in conjunction with his cunning and intelligence when he engages beings who outclass him, instead of having some ridiculous "plan" up his sleeve at all times.
Um...what do you think a plan stems from? Cunning and intelligence, methinks. And several of hins plans DO involve his resources (gadgets, inventions, knowledge of technology, etc). I have no idea what you're complaining about.
People, this "planning" thing is part of the core of Batman! Go read some forties and fifties comics. It existed even then. Look at all the "traps" he gets out of because he goes in prepared. That's that element of the character brought into the modern day by authors who recognize its significance. It's not something that Grant Morisson made up to make Batman look good, it's something Grant Morrison managed to utilize better than any other writer in recent memory.
And the whole "preptime" thing is just plain idiotic because it assumes that NO ONE else prepares for any fights EVER and only the Batman can engage in the sacred art of "preptime".
No, it assumes that Batman is a lot smarter than most characters. Which he is. This is a fact.
Batman Outwitting Metron - JLA volume 3, #14
Batman's strategic win over Darkseid - Superman and Batman #12
Batman defeating White Martians - JLA volume 3, #3-4
Wonder Woman - JLA volume 3, # 74 and #90
Bekka (New God) - Superman and Batman #41
So? It's not like Batman doesn't outwit non alien characters. Are you contending that he shouldn't be able to outwit or outfight these characters because they happen to be stronger? I don't buy that.
If you don't like "prep time" Batman, I question what elements you DO like about the character. What, do you WANT this incredibly intrelligent, resourceful character to get his ass handed to him because he goes into a fight against Darkseid without thinking about the angles?