Well throw another one on the “2.0 problems that make no sense” pile.
For the record, resistances are fine as a whole. But the deceleration resistance is actually mathematically useless if the percent isn’t high enough. For example, Erlidominus has a resistance of 50% (I personally feel like it should have been 100%, but that’s beside the point), so speed reductions are 25%. The thing is, for an unboosted Erlidominus, this puts it’s speed at 97, which is still less than every dino in the game. I fought one with Tryko and was able to outspeed it with my counter alone. Of course, this doesn’t account for boosts. But even then, you need a speed of 134 in order to outspeed even the slowest dino in the game after being slowed (with 50% resistance). And Erlidominus is one of the faster dinos in the game and has a speed boosting attack, so other dinos with this level of resistance get even less use out of it. If they wanted the resistance to mean that you had to have a dino of decent speed (maybe around 120ish) in order to outspeed a slowed dino with a deceleration resistance, then they need to set those resistances significantly higher. Otherwise, that resistance might as well be 0%.