I’m assuming you mean you’re trying a Total Control–not a Total Control Plus–with a PlayStation stick on MVC2.
As already mentioned, the Total Control may or may not have a switch on the side.
The Total Control series of adapters uses the following mapping for PS pad to DC conversion:
Start = Start -> Start
LP = X -> square
LK = A -> x
HP = Y -> triangle
HK = B -> circle
A1 = L -> L1 or L2 (probably only one and not both)
A2 = R -> R1 or R2 (probably only one and not both)
This is quite typical of PS to DC adapters.
However, nearly every PlayStation stick use this config for their six-button layout…
As a result, if you’re using a DC pad adapter with a normal PS stick on DC Marvel, one of your assist buttons will give the wrong assist, and the other will simply not work at all.
If the Total Control does have a switch on the side, as others have suggested, try it. The Total Control Plus has three settings: pad, steering wheel, and arcade stick. Check to see if your Total Control has the same. I don’t know if it does. Setting it to stick will correct the mapping to this:
A1 = L -> R1
A2 = R -> R2
If it doesn’t have the switch (or the setting on it) that you need, your best bet is to buy a Total Control Plus, or swap around the wiring for your stick’s buttons.