These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Special Effects Failure: The CGI in the first movie isn't honestly "bad" per se, but there's a noticeably Minimalist Cast when it comes to the humans and the design of Zartog's race is pretty bland. But to put things in perspective: the film came out in 2008, 1 month after WALL•E did, and just compare those twonote it's also worth pointing out that WALL•E had a much higher budget than this film ($180,000,000 as opposed to $40,000,000).
The second movie, given its straight to DVD status, plays this a little more straighter. It is also something of an Old Shame to the animation company behind that film. Up to, and including, not mentioning it on their own website.