Crissdragon

Hello,I am new here and I always wondered why Superman who's reaction speed is faster than bullet speed yet he is still taken by surpise? 
Like someone throwing a gas bomb or acid spray or someone taking kryptonite from a lead box. 
I mean if you think about it he can see all that in less than a second because things would move in slow motion for him. 
Even if some guy pulls Kryptonite from a box Superman could instantly blast it and then kill the guy,I mean it takes a few seconds for kryptonite to effect Superman and he can move in less than a second.