7-3 against Cyber Sub Zero?!? Seriously, this is wrong, the match up is 5-5 or 6-4 at best for Cyrax.
You may not have faced adept Cyber Subs yet. A good Cyber Sub will use dive kicks in
form for only one reason in this match-up; To punish nets, even from full screen, which is quite easy to do on reaction. Also, let's not forget that Cyber Sub has Sub's ice beam, which can trade with net in Cyber Sub's favor. CSZ's D3 is at 6 frames & has better reach than Cyrax's D1, so parry becomes a choice, not a necessity for breaking Cyrax's pressure. Cyber also has better mobility than Cyrax, both airborne (spacing dive kicks) & on the ground (superior dash), thus can outspace Cyrax. From full screen, if Cyrax refrains from nets due to dive kick threat & throws bombs instead, Cyber can play that game too, especially with
triple bombs to possibly bait a teleport escape & punish with 3,4. At close quarters I would use D3 to interrupt Cyrax pressure (also evades command throw) & immediately crossover punch into 3,4/3,3 overhead/low mixups. Cyrax's mix up is not in par with Cyber's, his low requires meter and doesn't combo. Lastly, Cyrax may have enormous damage output, but Cyber's damage is quite potent too (52% meterless ice bomb reset).