Yup, but he was using it as an example of how aircraft are more survivable than tanks. In a tank he probably wouldn't have even noticed he was attacked by that pilot as the bomb either wouldn't arm or would land a few hundred feet off target.
Aircrafts have ALWAYS had a higher survivable rate then tanks, ever since the first tank and aircraft were built. Aircraft's can climb to 40k to escape an enemy aircraft, where a tank has to rely on Armor protection, some relied on speed.
Only thing that helped protect tanks was mobile anti aircraft artillery, and even the Germans waited far to long to boost production on it especially the wirblwind and ostwind. Tactical Air support wasn't entirely a doctrine at the beginning of war, the Germans put it in practice
of having Artillery, Airstrikes and Tanks all into one cone during an attack, coordination on the attack is what made the blitzkrieg a terrorizing tactic.
Fighters can't always keep a CAP over friendly armor, so in this sense tanks will always be vulnerable - however in aces high I routinely provide cap over friendly V-bases in hopes to catch a few ground pounders looking for easy kills.