this venom it's very good, the only two weak points i found are.
First he it's really good on zoning but this offense based a lot on 5d and chipp damage, so if you practice block that 5d in the situations of the video (training mode recording> random replay) you can punish him 5d (-9 on block).
Second his defense it's bad, he want to keep you out so when potemkin close the gap he react very predictable like spend meter doing flawless defense always and dead angles regardless the attack he block, use the burst, etc.
remember you can use j.s or 2p to bait and block the dead angles, also you can take a risk and do empty jump and potemkin buster (he it's blocking after all).
vs his burst use bust bait like hammer fall>RC>block (bust bait)>combo, etc and bait the gold burst jumping forward and block in offense (if you block it in air it's a free potemkin buster)
finally the only 2 tendencies i found it's he use the 6hs>summon a lot, so you can read it and hammer>YRC>potemkin buster. and he start the round doing the 2s or instant air dash back, the first you can try megafist forward, and the second you can smash f.s, i think 2p trade vs venom's 2s, i need test it.