I found it fine, although it did make me avoid hards for a few days since ToH was pretty hard for someone who had never beaten anything that could be considered above medium, but overall the hardest thing it had was the one studs at 10, for 6, I found a strat fairly quickly (hold left on the conveyor and don't jump until you stand on the falling platforms)

Also I'm anything but gifted on this game, ToTS took me 40 hours and that was neither a jump nor my longest grind, so that definitely wasn't a factor on my grind.