Investors interested in Outsourcing stocks are likely familiar with Genpact (G) and ExlService Holdings (EXLS). But which of these two stocks offers value investors a better bang for their buck right now? We'll need to take a closer look.The best way to find great value stocks is to pair a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system. The proven Zacks Rank puts an emphasis on earnings estimates and estimate revisions, while our Style Scores work to identify stocks with specific traits.Currently, both Genpact and ExlService Holdings are holding a Zacks Rank of # 2 (Buy). The Zacks Rank favors stocks that have recently seen positive revisions to their earnings estimates, so investors should rest assured that both of these companies have improving earnings outlooks. But this is just one factor that value investors are interested in.Value investors are also interested in a number of tried-and-true valuation metrics that help show when a company is undervalued at its current share price levels.The Value category of the Style Scores system identifies undervalued companies by looking at a number of key metrics. These include the long-favored P/E ratio, P/S ratio, earnings yield, cash flow per share, and a variety of other fundamentals that help us determine a company's fair value.G currently has a forward P/E ratio of 17.14, while EXLS has a forward P/E of 30.57. We also note that G has a PEG ratio of 1.43. This metric is used similarly to the famous P/E ratio, but the PEG ratio also takes into account the stock's expected earnings growth rate. EXLS currently has a PEG ratio of 2.35.Another notable valuation metric for G is its P/B ratio of 4.93. The P/B ratio pits a stock's market value against its book value, which is defined as total assets minus total liabilities. For comparison, EXLS has a P/B of 8.36.These are just a few of the metrics contributing to G's Value grade of B and EXLS's Value grade of C.Both G and EXLS are impressive stocks with solid earnings outlooks, but based on these valuation figures, we feel that G is the superior value option right now. Want to Know the #1 Semiconductor Stock for 2022? Few people know how promising the semiconductor market is. Over the last couple of years, disruptions to the supply chain have caused shortages in several industries. The absence of one single semiconductor can stop all operations in certain industries. This year, companies that create and produce this essential material will have incredible pricing power. For a limited time, Zacks is revealing the top semiconductor stock for 2022. You'll find it in our new Special Report, One Semiconductor Stock Stands to Gain the Most. Today, it's yours free with no obligation.>>Give me access to my free special report.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Genpact Limited (G): Free Stock Analysis Report ExlService Holdings, Inc. (EXLS): Free Stock Analysis Report To read this article on Zacks.com click here.