According to my measurements they are "about" the same size as Tiny Epic Kingdoms. Luckily, I have that game, so I compared the physical cards. They are the same width, but the WD:AOW cards are about 1/2mm longer. Given that, Mayday Games's MDG-7148 should fit, possibly just a little too short.
Bear in mind that my measurements actually show the WD:AOW cards as being too big by about 2 mm width and length, but I compared directly to the TEK cards.