And in the case of ack the con had something to do with dragging you there. Thank you for providing that little detail.
No. You can't count on it. The best you can do with ack is run to it and then do a luftberry in it while hoping it kills the guy on you, which it usually will not. You can't lead a fatal, unrecoverable error. That kill I had on the P-38 in the C-47 was a pure and planned an air-to-air kill as I've ever had in anything with guns. Based on the P-38's prior behavior I was 95% sure he'd push his nose down to try for a gun solution and if he did there was a 100% chance he would fly into the terrain and that is exactly what happened. No ack kill can ever be that cleanly planned because you cannot count on the ack to actually kill.
I will be honest, I routinely chase people into the ack in the Mossie because 90+% of the time I take a few inconsequential, or at least non-fatal hits. The only ack that worries me is 5", 37mm manned, Ostwinds and Wirbelwinds. Auto-ack isn't that big a deal.
I just don't think people should get free kills out of it.