But Sheer Force is Feraligatr's Hidden Ability, a thing that was available years ago. There's a chance that this Feraligatr doesn't have Sheer Force. Plus, even if it is a little less accurate, it's a Feraligatr. Chances are, it can take on super effective hit. Also, Pokemon has been known to be a technical, strategic game, it's also been known for playing with your chances. I personally think that adding a little bit of that makes it more fun since you never know 100% what will happen, instead of just knowing with rough calculations.