Disagree on all 3 counts. Let's go one by one.
India had Bedi-Chandra-Prasanna-Venkat at home. The best spinning attack by a gazillion at that time, arguably ever. Bedi, Chandra and especially Prasanna did really well in their Aussie tour. It was a very far thing from easy runs in India, especially at middle order. Pakistan had Imran, who had well developed his reverse swing and was fuming, alongside excellent home bowlers in Qadir and Nawaz.
Viv is held above by peer ratings in general. Way or not, or if even at all, depends on who you ask. And again, peer ratings is a highly flawed method of judgement, I only use them for players who are old enough to not be properly evaluated by stats.
Chappell is close, not very close. There is a small but well present gulf between these two. On Barry, love him but think ranking him this high is makes less sense than ranking Procter the 2nd Greatest cricketer. Yes, I have seen your reasons and yes I think most are trash, you follow them because you want to believe in Barry and have an attacking high tier opener.