MadeOfMetal
Kenshi Srubtastic,Cyrax, Special Forces Mains
technically not reacting to a 18frame or lower move, he is reacting to a 14+ frame move then 18 frame after that move. but if it was an 18 bframe move alone he would not be able to block on seeing the move performed on screen. just when he knew it was coming out, which is a readIts a reaction. Hes essentially fuzzy guarding against the overhead since it is significantly slower to the low. This is why the delayed low works very well for shinnok.
]but i get what you are saying