According to numbers released by The NPD Group, Nintendo has just beaten its biggest competitor: Nintendo. For its entire duration (2012-2017), Nintendo's Wii U console sold a little less than 14 million units worldwide. Now, just two years into its life-cycle, the Nintendo Switch (and recently manufactured Nintendo Switch Lite) has already sold over 15 million units in North America alone. How would Mario word his reaction to this news? Ah, we've got it: "Woo-hoo!" Nintendo's Switch consoles, enjoying a 20% increase in sales from 2018, have captured the video game-playing public's …