Then don’t use a thick pick, but a thinner one, like Herco Flex 75 or Dunlop Standard Nylon .88 mm. There’s no chance in hell that you will be able to achieve that biting upper mid‐range emphasis with a thick pick. Enough said.
By the way, don’t angle the pick too much, or you will get a mushy attack that’s certainly not a trademark of these guitarists. For the record, Ace holds his pick with the pad of his index finger rather than the side, naturally leading to a relatively small pick angle.