Yeah that's what the SRK is for. I tried to keep it simple, but since you brought up frame data I might as well explain it to Timedog. If you KNOW someone's going to try to either tech out the throw, or option select, the SRK is going to catch them.
Assuming perfect timing, ryu's cr. jab is +2 on block, with throw's taking a 4 frame startup, and standing taking 1 frame. What this means is if they try to tech the throw, they have to do it right after the jab. Most people don't have that perfect timing though, which is why people w/ 3 frame jabs like rog/chun/etc. can beat out the throw.
Now where the srk comes in. If you're absolutely sure that they'll tech right after the tick, then SRK wins ALWAYS. If they're holding forward tech, they're not blocking, so they'll get hit. If they option select(downback plus lp +lk), they're tech doesn't come out since you aren't throwing, but instead a short or a jab comes out. Since you have +2 advantage, they're jab wouldn't be able to hit you until the opening frames of your SRK, which has invincibility, and bam, they're hit. Get your ultra or continue the ground pressure.
Just remember that this is only a punishing tool when you're absolutely sure they're going to tech.
