The market capitalization (mcap) of a company or chain is a measure of its size and is calculated by multiplying the current price of a company's stock by the total number of shares outstanding. When comparing chains to one another in terms of size, it is most often done with reference to market cap rather than price. This is because the market cap provides a more accurate representation of the size of a company or chain, as it takes into account both the current price of the stock and the total number of shares outstanding. Furthermore, while price can be manipulated by market forces, the market cap is more resistant to changes in price, as it takes into account the total number of shares outstanding. Therefore, when comparing chains to one another in terms of size, the market cap is the most reliable measure.