No problem. I just figured that Obi-Wan or Mace would be too powerfull for Antares, so figured best to give a more 'even contest'.
I haven't watched CW for a while, so I probably got the Force Push wrong, but, either way, Grievous was still able to dodge them after they were launched, rather than the Jedi 'missing'.
He didn't miss though. Grievous moved out of the way of the blast once it was launched. That's not Ki-Adi's fault.
Indeed, Shaak Ti was shown to gend off Grievous better, but ultimately, Ki-Adi was the one left standing once the ARCS turned up, and he'd clearly been fighting Grievous for some time, and had not been overwhelmed, so although Shaak Ti might've been a better swordswoman, ultimately, Ki-Adi was the one who was able to last the longest.
No they're not the same thing. A target moving before the attack has hit to evade the attack after the attack is made, is quite different than missing a target (moving or stationary)