Gray has got an amazing natural 'juke' move that you just can't teach.
I'm not sure what to call it really. It's like a hybrid move between a stutter step/side step/pivot step that he uses in close space while accelerating through the hole into the 2nd level. I remember pre-2018 I commented on his recruiting footage on here and said, "He(Gray) is going to excel at the next level(UT)". His HS footage he looked like a demigod using it. Even early last season he was making defenders look foolish one-on-one occasionally.
That said you're absolutely right about him still being arm tackled too much. That flea flicker you just described is a perfect example. He actually slowed down. I think it's because he can't pull off his 'juke' move at full speed and tries to do too much some times. That's on Jay Graham to coach him up. "Son, this is the SEC. You don't slow down and dance you're way one-on-one into the endzone in this conference. You go full speed through the DB into the endzone".
I commented during the 2nd half of the Gameday thread that Gray was trying to do too much. I saw two plays where he let off the straight line burst, trying to make guys miss, and left yards on the play.
Gray & Chandler have both improved from last year. Chandler has improved more & Gray is still leaving himself too open to arm tackles. I think Gray has the higher ceiling but so far Chandler's out working him x&o fundamentals & strait line speed.
With Gray's natural athleticism he's good to turn a few runs between the tackles into 10-20yrds more than your average SEC back gets. If he gets his x&o fundamentals down, he could turn into the most explosives RB we've had since Kamara running off-tackle or catching swing/screen passes in the flat.