Arithmetic on today's supply, not a forecast. It assumes nothing about whether Sui could attract that much money.
A coin's market capitalisation is its price multiplied by the number of coins in circulation. Sui has 4,094,585,913 SUI in circulation at $0.7192 each, which is $2.94B. Holding that supply still and putting XRP's $85.54B in its place gives $20.8905 per SUI.
Sui would have to take on $82.59B of new money to get there. A 29.0x move is large: it happens, and it usually needs the whole market to grow instead of one coin to take share from another.
Supply is held still, and in practice it moves: coins are minted, burned and unlocked, and every one of those changes the price a given market capitalisation implies. The figure also says nothing about whether the money exists to buy SUI at that level, which is the part that actually decides a price.
$20.8905 per SUI. That is XRP's current market capitalisation of $85.54B divided across the 4,094,585,913 SUI in circulation.
29.0x. Sui trades at $0.7192 today and XRP's market cap is $85.54B against Sui's $2.94B.
No. It is one division: XRP's market capitalisation spread over the supply of SUI that exists today. It assumes nothing about whether Sui could attract that much money, and it holds the supply still when in practice supply changes.
It sets it. Market cap is price times circulating supply, so the same $85.54B of market cap spread over more coins gives a lower price per coin. This uses the 4,094,585,913 SUI in circulation now.