Ok, this is been blown way out of proportion.
Yes the combo is a glitch.
The first laser is to trigger the super move, the 2nd laser is the start of the combo even though the combo counter doesn't count it.
The combo without any lasers or trait does 46% on its own as seen below.
The glitch tech works on a number of characters but easiest on lex. I also managed to get it working on general zods supermove. But you have to be precise with the 2 lasers..
Their is a real easy 1 bar version that does 70%.
laser, laser, trait, uf3, 1,1~db+2~MB, uf3, f2~df1, 3~df2~db1... 70%
I only did the harder version on lex cos it did 1% more damage, but the other combo is much easier and will work on all the cast..
The tech in the glitch combo is nothing new btw, it was being used in mk9 too. For instance you could do an uppercut on sheeva during her xray move then start a combo and it would do insane damage because it counted the uppercut as part of the combo..
This tech is by no means a call to get superman nerfed. It is completely situational and you will most likely never see this in a match.. This tech will most likely work with other characters too, so its not superman specific..