^
I wouldn't say, that Fisto was above Kolar or Tiin. He just had much more time to react, as he was the last Jedi that was attacked by Sidious. And he had Mace on his side.
Anyway, even if Sidious would be able to blitz Savage or Assaj, I doubt that Talzin would let that happen. Talzin probably would attack him with her lightning, and Sidious' answer would be his own lightning.
If this is Talzin from SoD, then on neutral ground Sidious would be able to overhelm her much faster. So Talzin's team have to react somehow.