When Pike fishing, I've always just picked the willow, just because they ran a little deeper. Maybe it's also the faster vibration that feels more like a fleeing baitfish vs just the thumping of a Colorado?

ive caught some bigger Pike on colorado bladed bucktails as well..

I have a couple colorado blade spinner baits, that almost every other cast i could hammer a pike thumping it through the weeds in canada this past year.

Like jason said, i don't feel it really matters with Pike to be honest.. It could depend lake to lake possibly.. depending on the forage, but for the most part it could just be the particular spinner bait you are using as well. As pike will hit just about anything that touches the water

i have a rabid squirrel spinner bait with colorado blades, and you thump that through the weeds and pike will crush it a lot, but i feel with that it is more of the look and vibration from the thick marabou skirt than the actual blades.