Ooh boy.
Sonic can run at the speed of sound, right? Well, Orion can be faster than light but needs to be flying to do so (I call it hyperspeed). Sonic and Orion are both pretty agile, so there's probably a draw there. Orion is able to zone out Sonic with various weapons, but ranged weapons are not going to defeat Sonic alone. Sonic is faster than Orion on the ground, but Orion has good reflexes and could block some attacks.
I haven't developed all of Orion's powers yet but from what I've developed there's probably a draw there.
Also for the user below me, you can ask me Orion's powers via PM or my Ask Thread.