Here are certain facts which needs to be considered
No video evidence
There are very few clips available and hardly any video evidence to backup all his innings.
Bradman was given LBW just 6 times, and was bowled 23 times, this suggests that he would
have been struck in front quite a few times but would have been safe because of the LBW rule
of that time and this also raises a lot of questions regarding the decisions given by the
umpires of that time, I would really want to see the videos of complete Bradman innings to
believe that the decisions made were correct and how much advantage did Bradman get.
There has to be some video evidence in this case, because he is being compared with people
of other eras and is also being claimed to be better then them.
How true are the statistics of that time?
Records of the batsmen of later eras have been statistically accurate, we see each and every run scored by Lara or Tendulkar or Ponting on TV or some or the other coverage, what about Bradman? how true are his statistics?
What's the proof behind the runs he has scored?
Talking about averages and the level of cricket.
The amount of major teams he played was just 1(Eng) leaving out the minnows.
People who say that cricket hasn't changed much, here is one thing about cricket that has
changed a lot, the number of good teams in Bradman's time were just two(Aus and England) and
in the current era, there are 8 teams which are very strong and have extremely talented
players.
The whole hype of Bradman's superiority lies on his averages,
to compare his average with others, you need to have similar conditions to judge the performances of others.
Bradman played 1 top team and 3 minnows, we will see the records of other batsmen against not 1 but 2 top teams and 2 minnows(Even though the minnows of that time were just ridiculous and hardly played good cricket compared to the current minnows)
For e.g.
Mohd. Yousuf has averaged 62 vs England, 101 vs West Indies, 251 vs Bangladesh and 68 vs
Zimbabwe,
which makes it an average of 121 against 2 top teams and 2 minnows unlike Bradman who faced
one major team(which was not that good) and 3 minnows.
Kallis's average against India, West Indies,Bangladesh, and Zimbabwe is 98.
Dravid's average against New Zealand, West Indies, Bangladesh and Zimbabwe is 74, again its
2 major teams and 2 minnows unlike Bradman.
Sachin's average against Australia,Sri Lanka, Bangladesh and Zimbabawe is 83.
Sehwag averages 91.14 against Pakistan and 72.88 against Sri Lanka. The strike-rate of
Sehwag is way above that of Bradman, again its against two top teams and no minnows.
Bradman's strike rate was 29.7 compared to Sehwag's 82.09.
Steve Waugh's average against England, SA, Sri Lanka and Zimbabwe is 85.
I think all the above examples prove much about these players, similarly, even Bradman's average doesn't prove that he was the best ever.
And to add to that 63% of Bradman’s career was played in four home grounds and 36% in five
grounds in England.
Pitches
The pitches in Bradman's time were batting friendly wickets,
the time before 1920 had bowler friendly wickets,
Between 1920s to 1960s, the pitches were extremely batsman friendly,it was referred to as
the batting-friendly age.
Since 1970s there was a balance in the pitches.
You can check the batsmen with highest averages, most of the batsmen with higher averages
belong to the 1920-1960s era.
And Bradman didn't succeed on the sticky wickets which were the only difficulty in that
time.
Argument that the current wickets are flat and Bradman batted in difficult conditions is
just wrong.