It's definitely X-com "like". It many ways it's far more casually oriented. No varying hit percentages, for example. If you or the enemy don't have cover to an enemy attack, there's a 100% hit chance.
It also does things differently enough that it changes the strategy. Movement an action are key. As an example being able to be tossed a long distance opens up massive movement potential that changes how it is played. There's still a lot of strategy involved, just a different flavor of strategy.
X-com is about cover, overlapping arcs of fire, methodical movement, etc. This game is far more about exploiting movement in combat.
It's a Mario game and it's a Rabbids game. It's inundated in cuteness and lightheartedness. I found it charming, funny, and enjoyable. But I imagine someone might alternately find it "too" cute, if that is possible. While it is certainly made with children in mind, just like old cartoons there is a touch of adult tinged humor mixed in as well.
I don't know if this helps, but many people who like Mario games, but groaned at the thought of a Rabbids game (often just silly for silly's sake) came away enjoying the game immensely.
That probably doesn't help much as I found it thoroughly enjoyable. Maybe watch some VODs of the game being played, or VODs of the story/exploration part of it.
Regards,
SB