Scotts, both balls are drilled identical @ 40* x 3 7/8 x 65*. The Octane goes longer than the Rage and snaps harder than the Rage of which it is designed to do due to it's type cover. Original NIB cover gave a very late hockey stick look and I have never done well with that look on any brand of ball. Rage never had done that from day one, it simply moves a bit earlier than the Octane and has great continuation thru the pins whereas the Octane doesn't always have that continuation. Changing the cover on the Octane can give it a looks close to the Rage as well as earlier also if desired, but when doing that, it is DOA at the pin deck. The Rage hooks a wee bit later than the Thrash Frenzy, but it is not a skid-snap type hook like the Octane was designed to do.
Another factor is if there is any carry down at all, the Octane can get touchy whereas, the Rage ignores it and continues it's move. I mean this thing today isn't a one time thing, it happens every time I bowl with the 2 balls, low games with the Octane and higher games with the Rage.
You are correct that I don't match up with the cover, thus the whole ball.