I go off the information i have and the information I have is that he has horrible MUs, I didn't say for sure he was bad and asked for an explanation
Asking for a straight answer is apparently taboo
My straight answer is to play Tyrant. I could get into detail on how Grundy's 5 frame anti air negates any kind of box pressure from Superman, or how Superman cannot loop a straight laser into a another grounded straight laser because of the threat of swamp hands, or how once Grundy gets his chip trait out, Superman is in deep doo doo, or how if Grundy gets his health trait out, Superman can only get into the mid to high 30s with one bar and trait, or how the fact that Superman is a -24 on ground laser now instead of -11, Grundy now has an easer time closing the distance, or how the nerf of F2...
JUST FUCKING PLAY TYRANT. He's the best Grundy by a country mile at this moment and I have the chance to play with him every week, and he's beaten me, Slayer, Pboard, MIT, and Godspeed several times in tournament. All amazing players, excluding my fraudulent self. That privilege alone makes me feel entitled to rebutt by saying Grundy is potential top 5 material.
EDIT: Even Tyrant told me that at the highest level, Superman vs. Grundy could be only 6-4 Superman. Which I agree with. Superman still beats Grundy, no doubt. I just feel this freak of nature Grundy is being disgustingly slept on.
Just my two cents. Still love you RYX.