yeah, thats the thing everyone forgets about the B29... It is not just a bigger bomber...
The ME163, and the ME262 were SPECIFICALLY designed to counter the B29... (when the Germans believed it was going to be deployed in Europe)The B29 was such a GIANT leap forward that it was largely untouchable by any conventional fighter. It was faster than many of the fighters of the time and flew much higher.
It would walk in ranks across the AH maps and there would be no other fight than to try to stop the B29... Thats not fun gaming. Thats just poo.