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Steel floor plate

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Table 3-18a in the AISC 13th Edition provides tabulated allowable uniform loads for "deflection-controlled applications".  The deflection limitation used is L/100.  For a 4-ft span, the maximum deflection would be about 1/2-inch - this seems rather "bouncy" to me.  Grating tables typically recommend a limit of 1/4-inch deflection under 100 psf live load for comfort - but a 3/8-inch plate at a 4-ft span designed per AISC would have about twice that deflection.  
 
What is the basis for the L/100 allowable deflection?  Does this limit provide adequate stiffness for "comfort"?