How ’bout them apples. With a market cap of over $632 billion, Apple is huge. That’s common knowledge. What may surprise people is how it compares to other giants in the tech world. While the company often competes with Google, Microsoft, and Amazon, the three giants total combined market cap is still well-below that of Apple. Throw in Facebook for good measure and Apple still comes out triumphant. TheNextWeb gave us the numbers: Value by market cap: Microsoft: $256.78B Google: $221.48B Facebook: $41.43B Amazon:  $111.26B Total: $630.95B Not bad at all, especially when you consider that all…