From the previews I've seen, characters in "The Wild" look
much more realistic than the ones in "Madagascar". Personally
I prefer the more cartoony look of the critters in "Madagascar".
The critters in "The Wild" look a little stiff and "plasticky".
And yes, the similarities between the two movies are blatantly
obvious. Hopefully, this movie will be better, as Madagascar
really fell short.
Just going back in animation history a little bit, I remember when
"Antz" came out, really wasn't fond of how the movie looked, and
that it was just too adult. A short later while "Bug's Life" came
out, with a much better story!