Notes:

Source: http://donut-warlock.tumblr.com/post/145908087221/big-hero-6-moment-in-kirby-planet-robobot
Let's see:
*Big bad backstory is about losing his daughter due a big machine. The daughter its not dead. (Thought Susie may be a clone)
*Big machine can create portals (Primary function in Project Sparrow)
*Big Bad attempts to use it at the end, but it goes wrong.
*Heroes deal with the machine in a weird purple space (Actual space in Kirby's case, weird alternate dimension in BH6's case)
*Big bad who look like normal people compared with most of it predecessors.
*Setting more robot-based compared with its predecessors.(In BH6 case, by predecessors I mean other movies from the Disney Animated Canon)
*Robobot armor Cutter form is yellow and uses edgy discs (Gogo) and the Sword form is green and uses double plasma swords (Wasabi).

If I am missing something, feel free to inform/correct me.