Haste = same TP/hit
DW = Less TP/hit because it counts as lowering your delay
The TP you spend on using Haste Samba can be somewhat recovered by the fact you are not losing TP/hit for having the 5% DW, because instead it is 5% Haste.
Said it when I first woke up so probably didn't sound as good to everyone else as it did to me.