Let me guess, they said different genres have different standards and aren't comparable directly?
For example, they were explaining why Bayonetta 2 lost to Mario Kart 8 as "Best Wii U Gamer of 2014". Their main point was that between the 2, which one they are still playing. While MK8 is excellent (even more with the DLC) and i have no problem with it being Wii U GOTY, their point shows that games with replay value have an advantage.
Their whole method is odd in fact. It seems they just gather together and discuss for hours until everyone but one gets tired of fighting over it. Almost that.