Metagross has Psychic
Skarmory has Drill Peck
Golem has Flamethrower
Venusaur has Sleep Powder
with the exception of Skarmory, I can sleep every one of those before they can touch me
then leech seed them for sapping health every turn.
of course, you do have a point, against metagross at least I would have to switch Venusaur out into probably Arcanine. Golem would take a Razor Leaf to the star fish, though.