Mansell's win in Adelaide was, shall we say, a little lucky but not entirely undeserved.
He needed to get a bit fitter and up to speed but could still go for it.
I read somewhere it was a short lived comeback with Williams mostly because Patrick Head couldn't tolerate the guy anymore. Since they had an option on Mansell for the following year, he was paid out. And then he flunked out at McLaren.
Anyway, this was also a very successful comeback since he became Britain's highest paid sportsman that year for not driving.
I'd say Mansell's half-'n-half comeback in 1994 was quite successful. 4 Grands Prix resulting in 2 DNFs, a 4th place and a win — that would've been a third place had Messrs Schumacher and Hill not collided. Quite all right, I'd say.
His 1995 efforts, though...