I recall a back and forth between an A-20, Cobia perhaps, fan and Mossie fans as to which was the better fighter. This was back before the Mossie's update. The A-20 fan insisted that the A-20 was the better fighter because the Mossie's speed and climb advantage wasn't much. After being put to the test the A-20 fan said that the Mossie's power and acceleration/climb advantage was better than he had thought it was. He got one brief shot on the Mossie that caused no damage and from that point until the end the Mossie controlled the fight. I think it was Cobia in the A-20G and Batfink in the Mossie, but I don't recall exactly.
If you are in a fighter, any fighter, don't play the A-20G's game and he doesn't have a massive E advantage at the start, you will win. It doesn't matter if it is Cobia or newb number guy. Cobia will make it last longer, but the end result is the same.
On the other hand, if you take liberties like the OP did, well, Cobia'll kill ya.