By Igwe PatrickThe profitability of companies is typically judged by their net income, which represents total earnings after all expenses, taxes, and costs are subtracted from total revenue.There are a few criteria which are considered when comparing the profitability of companies. These criteria include revenue, profit margin and Return on Assets (RoA) among others. Professional analysts tend to focus more on the net income and profit margin to get a clearer picture of how much the company is