Bushell also said that, while a second medal would have been nice, he matched his expectations for the London Paralympics.
"I thought I could be competitive enough for a medal," Bushell said. "At the end of the day the better boys beat me, so what more can I do?
"From the heats this morning I wasn't feeling too good, but I went quicker in the final so there's not much more I could do.
"It's my first gold [that I won in 100m]. I came here to win one gold, anything more than that would have been a bonus."
Li Huzhao of China was the eventual winner of the 200m.