ill draw just as fast or faster than someone with a OC holster.
No reasonable person could say this and be serious. There is absolutely no way that someone could be faster drawing from concealment than from an exposed holster. Not unless you are drawing from a Level 3 or 4 OC holster compared to an open-front shirt concealing a passive retention holster. Then, yes, the CC might be faster. But there's no way a tucked in shirt over your gun is going to be faster than my thumb-snap holster. It's impossible. And the same "fumbling to disengage the retention" that you point to in another post also applies to YOU fumbling with your draw from concealment, and any training that you can do to minimize that can also be done by an OCer.
Let me spell this out in detail: say you're OCing, and you are held up. Hands are up, arms at shoulder height, elbows bent at 90 degrees. You go for your gun. Your draw hand goes straight to the gun, disengages the retention, and pulls the weapon.
Now the same scenario as a CCer. We'll use the most common CC method: large t-shirt draped over your gun. Same starting position. You go for your gun. Your weak hand has to go toward your gun just before your draw hand does, because it must pull the shirt out of the way before your draw hand can do anything. You must lift the t-shirt clear of the gun, and then make your draw.
Now, you should be able to see that two actions requiring both hands has to physically be slower than just being able to use one hand. It's simple logic. Plus, notice the advantage to OC: while your draw hand is going for the gun, your weak hand is free to be able to push away the attacker, or possibly deflect any weapon that he has. Can't do that when CC, unless you are using an open-front garment for concealment. But in the scenario I described, using the most common method of concealment, you can't.
Now, of course, you can conceal in a variety of ways. But each one will require a different method and technique to break concealment. With OC, it is the same EVERY TIME, no matter what you are wearing, because the gun is ALWAYS exposed and easily accessed.
If after all that, you still believe CC is as fast or FASTER to draw from than OC... well, I don't know where we can go from there, because you are not basing that assertion on logic or reality.