Eh its got better. They tend to throw in counters to what you might try to use. Your not gonna find it as easy as in the first games to 1 shot the gym with one pokemon. If its an electric gym do not expect them to be lacking ground counters such as with emolga.
toughest ones i can think of off the top were water trainers with water/grounds or ludicolo, namely wallace.
Love Ludicolo. One of the greatest gifts to grass types roster. Sure the stats are not incredible but its a plant type with access to water and ice moves from the water move pool. --- Rotom Fan With an Air Balloon YO DOG i heard you like yo Rotom's High. So i gave it a balloon so it can be fly while he high while he way up in the sky! Dog!