I agree, casting with the micro eyes there is little difference. It does seem to lighten up the rod. The manufacturer claims that having more eyes gives the line more contact with the rod blank helping you to feel the bite better.
I like both.
It also means that under a load the line touches more of the rod blank creating more friction. I haven't noticed any casting difference between the micros and standard guides. I like the flex of the Duckett rods, and have never had any problem out of them. I have two Duckett cranking rods and one worm rod.
I also like the balance of the rods.