Even if you think Viv is a better cricketer, Gilchrist is a more nailed on pick for an ATG XI surely? He's way further ahead of whoever the second best keeper bat is than Marshall is ahead of the rest/ sobers ahead of Kallis... Let alone viv who has 4-5 batsmen who have legitimate claims to get a middle order spot. He's as close to a unanimous ATG xi pick as it gets.
I admire the hell out of Gilchrist and think he's a top 5 all rounder and for me a top 25 player of all time.
I don't think he's over rated and he was probably the 4th or 5th most important player on what is arguably the greatest team ever.
Your argument is that Gilchrist is an absolute lock for an AT World team and the 3rd name in the team sheet and I will give you my arguments as to why I don't share that belief.
1. Some will always prefer the better keeper. There's only one spot and from a philosophical perspective there are many who would prefer to have the better pure keeper. I shared a video not a week ago showing that exact argument. Even when Cricinfo released their effort, the introduction article had only two dissents for the team, one was wondering why, in a team with such batting strength would they not go with the better pure keeper.
2. There's been two, as close to official as it gets, ATG teams selected in the 21st century, Gilchrist didn't make both of those. The Wisden All Time XI has Knott as the keeper, going with the sentiment of the above point. Kimber and Bumble are (at some point hopefully) competing an ultimate XI and they too have decided to go with Knott over Gilchrist. He's not been automatic in such exercises.
3. You've made the argument that he's further ahead than this competition than anyone bar Bradman. That's really dependent on perspective. He's not the best keeper, not even top 10, and not sure if top 15. Knott, who isn't a bad batter himself isn't that far behind Gilchrist, especially if weighting keeping more. Warne (motives can be questioned), was quite clear during his career over a specialists like Healy, even going as far as starting a sentence once with "if I had a competent keeper". While I don't share those views, there's also no question that Healy was comfortably better.
Then there's the batting. Ponting often gets a lot of criticism here on CW, he played in one of the flattest eras and came in behind one of the greatest opening tandems and was free to attack from the word go. Gilchrist had all of those advantages and coming in 4 spots lower.
I'm not saying Gilly wasn't great, but he escapes the criticism and adjustments dolled out to other contemporaries.
I also didn't say Viv is more locked on for a spot, I don't think either is more than the other. I also don't think either are more locked on than Marshall or Sachin.
I've mentioned the argument that you've repeated, that Gilchrist was further ahead in his dual role over the competition than Marshall over his. But Marshall was ahead of his, and there's 2 opening spots and 3 overall Sachin roo is ahead of his competition and there's 2 spots.
Yes they have their rivals.
For Marshall there's McGrath, Hadlee and to a lesser extent Steyn.
Tendulkar? There's Viv, Lara and again to a lesser extent Smith.
As closer as it may appear, none of them are beating either, and both are now seen both inside and outside of CW as the greatest middle order batsman (not named Bradman), and the greatest bowler ever. Yes there are arguments for Richards or McGrath, but the former maintains a plurality of support. No one did it for longer than Sachin and no one could do what Marshall could, far less everywhere he did it.
I'm not saying Gilchrist doesn't make mine, I actually have a post where I go into detail of how mine is selected, I'm just saying that to say that Gilchrist is and has been a unanimous or automatic selection is factually incorrect, while there's no way Marshall not Tendulkar doesn't make one of these with any collaborative elements.
Literally the last vote we had for an AT team, Marshall was unanimous with the most votes (Bradman was automatically entered and the voting around Sobers was a little confusing), the last mini effort we had, he received every bite bar one, and the thread for an AT attack was all but unanimous and not remotely close.
Not to add when you're building a team it's your premier batsman and spear head that's top of mind. We just also happen to have a batsman, all rounder and slip specialist all in one that also forces himself into that discussion.
The effort by many to consistently downplay Marshall's greatness and impact on the game and as a surety for this team is a conversation for another time, but one that exists.
But yeah, Gilly was amazing, just not ahead of these two for me. Not in terms of greatness nor certainty to make said XI.