He averages below 15 in England and the West Indies - I'd argue that your best ever batsman has to average more than a tail-ender in all Test Match nations; otherwise you're not going to be seen as an all time great.
Incidentally; when India bats first Kohli is terrible (in 33 innings he's scored
[email protected]) while when they field first then he's really quite good (in 26 innings he's scored 1,
[email protected]). I don't know its that's common in batsmen (although I doubt it otherwise everyone would put the other team in) but that is interesting. Its the same in ODIs but to a much lesser extent (averaging 38.34 batting first and 63.60 batting second) and also in T20s (29.28/80.28). Apparently you should always put India in since it blunts one of their best batsmen... I didn't go look that up, I saw it while looking up his stats batting in England and thought it was quite interesting
e: I looked up another subcontinental batsman (Sangakarra - who's statistically better than Tendulkar in tests) and there isn't that disparity (58.14 batting first, 59.31 batting second). Interesting...