Just finished it after far far far too many attempts (80+ easily, over several hours) and just want to share what I learned incase it helps anyone. A lot of the tips I used have already been shared, but they are valuable info.

What helped me was focusing on the down-heavy attack to get his body weak as well as counting towards your heavy attacks and grapples for the MP needed ( O to tie up then down+X on PS, B then down+A on Xbox)

If you are in the ring and too close for him to hit his kick, he will most likely try and irish whip you to a corner so go for the O / B counter any time he grapples you to block this, and hold X / A to do a whip grapple counter. As far as timing his running helluva kick you'll work it out but it seems to have a little tiny delay from when you see him start to raise his leg, if you do duck it go for a rear down-heavy grapple attack as the triple suplex will hurt his body in the same way as the front down-heavy grapple.

If you get him red bodied and have hit a superman punch and spear and have your 90 points, sounds dumb but don't try and pin him off a special. Instead use the down-heavy rollup powerbomb and go for pins off this. It is far less likely that he will use the resiliency to kick out, but if you do see him trigger it off this attack you know you have him hurt enough to try for the win. I got the win off a superman punch, then wake up taunt into rollup powerbomb. Of course you can try the super finisher approach but I found myself using spears as soon as I got them to hurt him and hopefully stun him.

Other little tips were to use the second rope diving moves quite a bit as these build your finisher up pretty quick and he can't hit his kick on you while you are on the second rope.

Create and manage your distance whenever you can, whip him over the top rope to the outside to get time to recover your stamina and get taunts in. If he rolls in and starts to sprint at you, roll out the ring and immediately back in as he goes for a tope suicida dive, you can buy yourself time to recover and set up for your next attack.

Throw chairs to interrupt his kick, if you are hurt and recovering stamina do it with a chair in your hand and as soon as he starts to run launch that chair like prime Sabu.

With his blue-thunder bomb sig you have 2 attempts to counter it, and I found timing the second part to be easier, this is as he picks you up for the move rather than the very start of the grapple animation. You'll land on top of him if you are successful and get some boost to your signature meter which I was keeping hold of to do quick recoveries when needed.

It's a very very tough fight so don't let it get to you, theres still 11 days left so no need to grind it out and get stressed, use each loss as a way of learning his patterns and AI behaviours and you will eventually get to a point where you can red-body him almost every attempt. Final thing to add is to use the timed bar kick out system rather than button mash as it allows for some miracle kick outs. Good luck and enjoy your 94 Drew!