The transition in the wrist grab would literally just require him to spin his arm around and drag it down while remaining in contact.

Yeah that's not how I imagined it, Tab swung in from right to left stepping in on his right foot, Metz darted (his right) rightward to avoid the strike and then stepped in facing Tab's body, so he's facing Tab's body and they're roughly standing face on, there wouldn't be any reason for Tab's leg to be between Metz unless he stepped at any point, which I don't remember you doing. Considering Tab is so quick I'm not really sure why you let it get to this stage, he could have just ran away at any point up until this grapple and swung his sword.

Metz would probably be at Tab's 1 or 2 o'clock roughly.

Because Metz knife is curved the blade rebounded straight up rather than slashing past Tab, though I see where you're coming from and with a normal knife that probably would have happened (especially if Tab twisted or otherwise moved the strike away.) However, Metz position and his overall intention would override that in this case.

Metz strength in pounds is roughly 660, which puts him just slightly stronger than Tab, though it probably wouldn't be enough to be noticeable in this situation.