I have been waiting for a straffer nose bomber for years and was totally hyped when I heard that the A20 was chosen. A forgotton light bomber/attack aircraft of WWII. I have done a few missions with the A20 and have only died twice or once, can't rember and I am to lazy to open another WEB window to find out.
The A20, i have to agree, is one of the BEST addittions HTC has added to the game. I love how HTC throughs in planes now and then that no other online sim thinks about. For my logic on why it is one of the best. here it goes:

IT has ample forward firepower. Only downside is that it is not enough for taking out tanks like the 110 has. However it can stop a FLAK pzner dead in its track with only one pass. Otherwise it can pretty much handle most ground targets.

Its survivablity to ground fire is very high, more so then any other aircraft. I have flown the 110 versions and they do not have the durability of the A20. Yes there are fighters that can carry more and fight afterwards but they don't have the survivability.

BIG Factor.. its a radial powered plane. Inlines make a poor choice of engine for a low level attack aircraft when put up against a radial. Only exception is the IL2. Only reason beeing it has enough armour on it underbelly to make a M3 jealous.

We finally have a low level straffer nose bomber in the US arsenal.

Only Us bomber that I can get up over 350mph and does not compress or wings rip off. Heck one mission I caught a Mossy and had the A20 up to almost 400mph.
As for compareing the A20 against other fighter aircraft is not a good one do to the purpose of the design for each aircraft. THe A20 was a low level HIT and Run light bomber. Only time to hang around and strife is with support. If you see enemy fighters above or FLAK pnzer popping up you don't stick around you get the hell out.
The A20 requires a different form of fighting and I am not saying the 110 or mossie are bad planes its just that people need ot relise the design of the craft and its purpose. The A20 was design for Ground Attack, Extreme survivablity, speed and a average bomb load. In the US inventory I would say the B25H and J are next inline for survivablity in the Bomber/Attack role.
ANyway, MY 2 cents and THANKS to HTC for putting in another forgotton bird of WWII.
Gorf