Australia are not the only team that exist. In any case, hardly like Tendulkar, Mongia, Azharuddin, Sidhu, Laxman, Dravid and Ganguly never scored runs against Australia. Check the books again.
The vast majority of which comes from the series' in 1971 and 1978/79 when West Indies did not have an attack of any note. Against the famous three- and four-pronged seam attacks his performances were no more than respectible, same as everyone else. Anyone who knows basic cricket history knows that Gavaskar's performance against West Indies is woefully exaggerated. I thought you might have been aware of this.
Gooch combated the West Indian bowlers better than possibly anyone. However, an average of 42 (that's what it was until 1990, after which he smashed anything and everything for 4 years) is far from an exceptional performance and it's one most other batsmen, better players than Gooch, could not match. It's also a performance Gooch could not match against lesser attacks, too, as he averaged just 38 against the rest of the teams between '78 and '88.
Indeed, along with most other bowlers he faced. Greg Chappell is one of the greatest batsmen in the history of cricket.
No, he didn't. Gilchrist never faced Donald in that innings - aside from the fact he should've been out on 44. Not that the bowler in that match was the Donald I'm talking about - that game, and the preceding two, are completely and totally meaningless.