All arguments need to have a “with an exception according to the involvement of Batman” clause.

I had someone point out the old “Could a lightsaber cut through Superman” debate to me. A lightsaber is a focused, concentrated plasma beam. Superman has flown through plasma with no issues at all in the past, and despite what some think, the color of a lightsaber has no effect on a blade’s energy. A red saber doesn’t have anything to do with a red sun. In fact, if anything would hurt him, it would likely be a purple lightsaber which uses Hurrikain, a crystal used by Mace Windu that negates armor, or light blue for use of Opilia, which cuts through resistant materials. Superman’s skin could be considered either.

That aside, he’s been hit with all kinds of plasma, and since that’s shown to be a non-issue, the answer becomes “No, no it could not, with a remainder of Batman.” This is because Batman is a technical wizard and damn close to supernatural from raw determination and talent alone. He has the ability to modify a saber most likely, and is known to keep Kryptonite with him just in case Superman starts to get a little too dickish. Kryptonite has a habit of being crystalline, and even when not, Batman would recognize the need for a crystalline form. If he needed to use a lightsaber against Superman, he would simply add a Kryptonian crystal of some sort to the blade, rendering it effective against Superman as the beam itself would carry that Kryptonian electromagnetic radiation (whether that’s an artifact of Krypton or the process that created Kryptonite isn’t something I’m aware of).

So while the lightsaber, normally, wouldn’t be effective, when Batman is involved, it’s going to be. This applies to all arguments, and I shall present more examples later.

For the extra nerdy here-Mr. Terrific would, of course, be able to install the crystal, but his knowledge of the need for it, how to produce it, or to get the resources for it would be the barrier in this case. However, where a Batman modifier fails, a Mr. Terrific one should apply.