No, I don't think so. While he was regarded as the best batsman in the world for several years of his career when South Africa were banished from Test cricket I find it hard to rank players who never had enough of a chance to prove themselves at Test level. For all we know he could've played another handful of Tests and performed absolutely woefully, in which case he may have been labelled as a choker who couldn't perform at the highest level. Therefore, since he didn't put enough performances in at Test level, you will be hard pressed to convince me he was better than a proven Test batsman.
In any event Pollock's international career wasn't short in time span. He played his first test in 1963 and his last in 1970. To average above sixty over more than seven years is fabulous by any standards. And he was consistent. Here is his record after 1963 when he made his debut and scored 25 runs in a solitary innings.
YEAR.....TESTS.........AVG
1964..........7.............41.6
1965..........6.............67.8
1966..........2.............77.0
1967..........3.............76.3
1970..........4.............73.9
That is absolutely brilliant and consistent. 2256 runs in 37 completed innings over 8 seasons. 7 hundreds PLUS 11 fifties in just 23 test matches. This is something only Bradman seems to have bettered.
2256 runs at 61 over 8 seasons. No. I dont think his record can be belittled for not having played enough.
Ponsford, Hazare, Nourse scored fewer runs in complete careers and mostare candidates for their own countries all time teams. No one questions their lack of international cricket. Woodfull scored just 44 more.
No. He played for long enough and scored enough runs to be qualified and his performance in these games shows he was an all time great. In those 8 seasons todays cricketers would have played 80 test matches. His consistent record over time indicates what kind of figures he would have had if he had done the sam.