The situations you get after regular knee (which VT1 allows you to combo into without the corner or off an AA cr.hp) and after sledge > mp chop are better than choke/ddt in my opinion. Nothing has changed about the powerbomb knockdown, so even you guess right on manually timed powerbomb after choke you’re at a disadvantage - dash up can be reacted to and if you meaty with st.hk or lk elbow then they have a vreversal opportunity to negate the stun anyway. Of course you are going to win matches off stun when people guess wrong after choke, but the same thing applies with VT1… which is partly why some people refused to believe Alex was really all that bad in S2. A full CC into activation into max damage combo without meter does more stun with sledge than with choke, plus you get the option of spending meter on EX backdrop for significantly more stun and/or corner carry/side switch if necessary. And if they guess right on a powerbomb attempt after choke your ability to make a comeback is severely hampered without parry. Having parry available is just so important because it completely changes the risk-reward for your opponent when approaching/pressuring Alex, gives him access to reasonably effective hail marys, not to mention the fact that you can keep your vtrigger timer topped up by parrying and give yourself more time to get something going.
Obviously the choke oki is quite nice, but to get access to it you have to sacrifice too much.