Sorry, I have never played the Wario Land games.
Yeah, Donkey Kong Country graphics don't always fit in.
As someone who runs
WarioForums.com, this disappoints me. I mean, the Wario Land games are some of the greatest 2D platformers ever made, and to be honest... I'd probably put some of the better ones above even the best of Yoshi's Island or the NES/SNES era Mario games.
Wario Land 4 was probably my best influence ever. Seriously, the way every little detail was made different in each level and how each level was filled with fresh ideas and original graphics and music and what not... that's what I took inspiration from for much of this game and my past works.
As for Donkey Kong Country... it pains me not to include so many references to this great series (though Zingers, King Zing, Kaptain K Rool, maybe Squawks and a few others are included in NPC roles), but the graphics not only go against the general aesthetic of pretty much every other SNES game out there, but are also extremely difficult to rip and assemble, perhaps more so than anything else on a 16 bit system. If you want a nightmare, try and take one of the tilesets based on the games from SMW Central and make a level out of the 2 or 3 whole map16 pages of almost impossible to decipher tiles. Pretty much the only 'usable' one is the old bramble tileset, and even that looks ugly as heck in its currently ripped form.