FTFY.
Makes no sense at all. That is how runs get scored - sometimes you get a century, sometimes 3. It's not remotely "better" to always get exactly 30, than to average 40 with a few ducks
JFC, this series has been bad enough without cock-eyed analysis like this! Next:
"No Aussie batter has got a duck so far (if we ignore all the ducks)."
Calm down. They're just numbers. Nothing up my sleeve, no obfuscation.
I gave you the average with Root's ton included and with excluded. It shows the extent to which the already unimpressive top five average of 27 is reliant on that
one single innings out of 25. I think that's worth noting.
It's also a statistically valid exclusion. Removing outliers is a valid thing to do (as long as you're open about what you're doing) and Root's 138 is the only score that's over 2 standard deviations away from the mean.
"Sometimes you get a century, sometimes you get 3" only applies to Root so far. A more accurate statement would be "sometimes you get 40-odd, sometimes you get 0".