It's hard to say at the moment, I had the 6m up in the air and it was powered ok, could have used a larger kite, the only combat I had at the time was
the 4.8m, so way underpowered. The Yak would outrun the 6.5m Century though, I tried most of the tricks and couldn't get it to keep up.
By what I have seen so far, they're both smooth, fast, strong kites with killer upwind. I think it'd come down to the pilot. There's not much in their
league though. If you go up a size with the RM+ you'll still be in the race.
I'll post more thoughts on this in a couple days when the Combats clear customs.
Sysmic S1 Buggy.
0.7m / 1.4m / 2.0m PKD Buster I
4.4m PKD Buster
10m JoJo RM+
6m Flysurfer Outlaw
12m Ozone Access