Rune scim/sword - grav 2h?

Well, I was debating between the two for pking. I did some research and people are saying "rune sword - grav 2h", and not scim, and even Rs Wiki says it. Why is this? I tested it out in the Duel Arena and it seems that the scim is the same speed, if not a little faster. Since the grav 2h has the same speed as a battleaxe, it seems that the rune scim - grav 2h combo would be best, but the interwebz says otherwise. Does anyone have experience with this?

Stats:

45 attack
77 strength
67 Hp

 

It's because you don't need to switch styles when you whip out the G2H.
Also it only gives +87 to Crush while the other stats are negative 4 (Attack Wise) which would mess up your KOing ability if you used a Scim.

Quoted from rune wikia:
"The rune scimitar's combat styles are not compatible with the gravite 2h. Therefore player killers who wish to use the gravite 2h as their knock-out weapon may choose to use the rune sword as their combat styles are compatible."

 

"The rune scimitar's combat styles are not compatible with the gravite 2h. Therefore player killers who wish to use the gravite 2h as their knock-out weapon may choose to use the rune sword as their combat styles are compatible."