In the end, there are many different data points you can use and EBITDA is one of the most popular and many valuation firms use it in their analysis. Be sure to use many different sets of data because even something little could miss here but hit another data point. The goal is to achieve the most well rounded opinion about the company and learn about the major details. Regardless, test out all the data points and find what fits you the best. After that, you can tweak and adjust to either incorporate EBITDA or leave it out.