[Eighty Swords]

Here's the info on shields. I don't know if different shields have different block speeds, all Arms Lore told me was the defense rating of the shields.

Buckler shield:
Defense: 7

Bronze shield:
Defense: 9

Metal shield:
Defense: 11

Tear kite shield:
Defense: 12

Metal kite shield:
Defense: 13

Heater shield:
Defense: 15