1 hole installation v. 3 hole installation

https://www.homedepot.com/p/Delta-Classic-Single-Handle-Standard-Kitchen-Faucet-in-Chrome-with-Fittings-100LF-WF/204184486   The one above is 3 hole 8' inch installation.  The one below looks exactly the same.  But it is one hole installation.  Can someone tell me why the installation requirement is different?     https://www.homedepot.com/p/Delta-Classic-Single-Handle-Standard-Kitchen-Faucet-with-Fittings-in-Chrome-101LF-WF/204184487   I am quite puzzled.  So really appreciate any explanation.