No, it isn’t. It’s fundamentally different. You cannot see that since you are a Roman Catholic, but I’ll try to explain it anyway. The mainline Presbyterians (the first denomination infected by liberalism in the U.S., actually) started their slide with a rejection the deity of Christ as essential to the Christian faith, and they also denied inerrancy. From there, the slide happened in the mainline denominations. It had little to do with women in the ministry. On the other hand, no one is talking about removing the deity of Christ in the PCA. The day they start talking about that and those ministers are not immediately defrocked is the day my congregation will go OPC.
The most dangerous vote in recent years in the PCA was the narrow vote to accept non-Young Earth Cerationists into the ministry, which contradicted all the standards of the church. That has the potential for damage down the road, but its effects have not been felt yet.
It is still a vote to change and a vote on dogma. Sooner or later, they will push a vote to go the way of the PCUSA. That is the problem