That comment makes no sense. If the A-20G can bomb and kill you, the P-51D, P-47D-25, -40, P-47N, P-38, F4U-1D, -1C, -4, Bf110G-2, Fw190F-8, Me410, Mosquito and Typhoon can all do the same. The A-20G has no magical ability to kill GVs, it just carries a lot of bombs, but at the expense of being vulnerable to fighters.
Also, the 4.5" rockets are, at least in my tests, incapable of hurting a Tiger II. Even the British 60lb rockets couldn't hurt it. Only the Fw190F-8's rockets were a threat.
The fighters you mentioned except for a couple have a limitation of two bombs. If you don't think the A20 has magical ability, then you don't bomb**** (ty for not btw) or you don't gv much. I'll tell you how I can prove it, look up my A20 stats, I only fly it as last resort base defense, I have never practiced dive bombing and I get the kill almost every time with one bomb. I don't think I've ever killed a gv in a fighter that wasn't already damaged. So that proves I can't b****, but yet I can magically hit any gv that gets in front of the Havoc, luck? Too many times for it to be luck. Also you failed to address F3 mode, 600ft over town see enemy at 5k run for base ack come back, simple, no fighter has anything close to the advantages, thus you don't see ppl upping to kill a gv nearly as often with a fighter.
Finally, "vulnerable" to fighters, depends on how you look at that one too, A20 is a magical HO monster too. And, I don't use Tiger 2's, terribly slow and ballistics are poor, nor do I see many others using it either. With the exception of those concrete huggers.
I understand, (edit) some ppl dislike the gv aspect, 'tis ok. Not saying you do, but...
P.S. Also forgot to mention how much damage they take from wirbs and still land 3-4 kills...