Nvidia (NVDA 4.11%) has been notorious for being a high-growth, highly valued stock since its run began in early 2023. However, that's no longer the case using this one common and important evaluation metric. Now, it's nearly the same price as the S&P 500 (^GSPC 0.74%), which is an odd thing to say considering how much growth Nvidia is expected to put up over the next few years.However, this metric has one important consideration, and it could be giving investors false hope.The forward price-to-earnings met ...