Computers just NEVER use this Orb whatsoever. Never seen it being used at all except in the tutorial. I should play as Yoshi once to get a taste of it. It's useful for sucking up traps, but only if you're lucky enough.
I heard that Birdo and Yoshi glitched or SOMETHING and so if the CPU's get it, they will never use it. Didn't know that was true or not until everybody's saying they've never seen CPU's use them.