Marshall has stat inflation based on the greatest support bowling group shielding his stats a bit and retiring 2-3 years earlier than normal. Also mostly faced ordinary lineups compared to the rest of the ATGs.
But I though that the argument was that the quartet hardly actually played together.
Not to add that some of marshalls's greatest performances came in the absence of some of not all of the others. And that when Marshall missed games, even with all of that support, they often lost.
Then there was the point that he never played against minnows. What was Imran's and Hadlee's numbers again vs SL? Hadlee 6 games @ 12, Imran 10 games @ 14?
And he faced ordinary teams? But Immy, Hadlee and Dev didn't? But wait, they didn't primarily because they had to face the WI right? But Dev and Imran had their lowest averages vs the WI and Hadlee averaged 22, among his lowest as well? Oh wow.
And speaking of stat inflation, Imran didn't have the greatest stat inflation in the game by have the ultimate home advantage of biased umpires and rampant ball tampering? With a split during his bowling career of 17 @ home and 25 @ away?
And what about Murali and his home conditions and record vs minnows, how about Tendulkar, his home conditions, strong batting support and again, record vs minnows? Does that count as inflation as well?
And speaking of facing off against tougher opposition, Hadlee's highest average was actually against Pakistan, Dev averaged over 30 against them as well, Botham's 2nd highest average was against Pakistan as well. Not to add that all of their highest averages in a country was against again..... Yes you guessed it, Pakistan.
And who was often next? New Zealand.
And Maco was protected by his team mates? Didn't McGrath also have Gillespie and Warne? I mean while McGrath often got things started, Warne was often the match winner on day 4 and 5. And if he was so protected, then I imagine his wpm and wpi would be inferior to McGrath's, yet..... Maco had a wpi of 4.6 compared to Pige's 4.5, wpi are also similarly slanted towards Maco. In fact, when we look at 5 wicket hauls Marshall has 22 from 81 tests at a percentage of about 27%, which McGrath had 29 from 124 tests at a percentage of 23%. Not to mention of course that Marshall had that ridiculous s/ r of 46? For the 101st time, Marshall was driving the bus, and the bus was one of the two greatest teams of all time. It could also be argued that he did so far more than McGrath. Was McGrath also protected? Was he the bus driver?
How about Steyn, he played with ridiculous supporting casts as well from Pollock and Ntini to Philander and Rabada. And be had unparalleled helpful pitches at home for a pacer.
Let's look the man of the match and man of the series awards. From 21 series Marshall had 6, from 42 McGrath 5, while Warne had 8? MOM, Marshall 10, McGrath 11 and Warne 17, we all know the difference in the no. of matches played.
And again, no minnows.
Nothing you say is statistically, anecdotally or otherwise backed up by anything but your opinion and what if's. Yes he played for a decade, but in as condensed a schedule as there's been and while bowling at express pace for the majority of that.
Not only was he the greatest pacer of all time, and very arguably the greatest bowler, he also has an argument to be among the most impactful players on the landscape of the game and greatest since Sobers.
But you keep looking for excuses.