Pokemon's First Appearance: Pokemon Red, Blue & Yellow

So, how does Moltres top Articuno when they both have similar weaknesses (they're both very weak against Rock attacks) and the same base stat total? Well, neither one can take advantage of the other's weakness to Rock attacks. Articuno can take advantage of Moltres' weakness to Water attacks, but Moltres can take advantage of Articuno's weaknesses to Fire and Steel attacks. Therefore, Moltres would probably burn Articuno alive in a last Pokemon flying battle.