Consider this context:
- Person A was the only one who escaped from a prison.
- The prison had several inmates including A.
- Someone says that A bribed the guards.
- I want to reject that view by saying that all of the inmates could do so, but he was the only person who escaped.
I want to use conditionals to construct a sentence which accommodates the four points above.
They would/could also escape from the prison if his escape was through bribing.
They would/could also have escaped from the prison if his escape was through bribing.
I think both are correct, but I am not sure about the difference.
In my view, both are unreal conditionals and convey this information that they didn't escape. Would guide me about those two sentences?