You can't possibly say which option is better without knowing the end result...the CF.Having said that, almost always, and when I say that I really mean "always", the option of financing will be mathematically better (as long as you have positive CF). 

Here's a mathematical fact: When you hold onto an appreciating property, the longer you hold it, the greater the appreciation, the more money you lose.

However from a strictly mathematical standpoint it rarely makes sense to do so. 

So per definition then, if 100% of the population picks option 2, and NO ONE picks option 1, then saying "everything works" is false.You can not argue mathematics.

If so (which is very likely) it doesn't mathematically make sense to pay off these vehicles as it will take you a long time to save up 20k again just saving that little bit of money.

What I’m struggling with on this definition of COC is how it’s mathematically realistic to show a positive return within two years.

Prices on houses have to come down, there is no mathematical way that prices stay this high with a mortgage rate in the 6-7% even higher range.

Amortizations is a mathematical calculation that shouldn't change from lender to lender. 

This is not opinion, this is fact that I have proven mathematically over and over and over agian here on the forums.

Have a BA in mathematics and Masters in Accounting.