In retrospect yes and no.
Yes: There were cases of high caliber AA guns that could knock single engined planes out of the sky including fighters and dive bombers. But that is rare, if you look up the attacks at Lae in New Guinea in 42' a SBD did get blown out of the sky by AA Flak in one shot.
It was not rare for a fighter to be shot down by flak, either with a single hit or multiple hits. Just look at the squadron records for planes being lost. Also, your example really has no bearing because the discussion is about the Flak 88mm, not Japanese AA gun accuracy.
No: Most times 88 or other high caliber flak were mostly used on HBs in Europe like 17s 24s Lancasters or medium bombers. The flak shells were meant to be more of the damaging effect where the bomber that gets hit when it RTBs has too much damage to fly again and has to be scrapped. There were plenty of cases of single 88mm shells blowing wings off 17s and 24s but not many fighters. In WWII the 88 crews can load shells quick but most times its either a miss (which happened a lot) or a hit (plane gets damaged or goes down.)
That's why it is Yes and No.
You are correct in that the Flak 88mm was used in Europe, but incorrect about high caliber AA guns being used mostly in the ETO. Nor was the intent of German AA crews to "damage" bombers while they returned to base after a mission. The Germans used both blanket and rolling AA tactics that engaged the bombers to and back from the target. Since the Flak 88mm was basically a semi-auto AA gun, crews were able to fire quickly and with the the use of an analog gunnery computer, Flak 88mm crews were able to provide extremely precise fire and able to tie in and coordinate with other gun crews to provide accurate multi-AA gun on a single target. Then with the Giant Würzburg, Flak 88mm gun crews were able to provide precise fire without visual contact.
