MacBook Performance comparison

Due to an unusual set of coincidences I have 3 different Macintosh computers in my office today so I could run performance comparisons. After a brief bit of research I came across XBench, a free, open source benchmarking suite. I am not positive that it is the state of the art, but it's quite popular. Here's what I found:

Mac Pro, Early 2009, with 6 Gig of memory and a Solid State Disk (SDD) (MacPro4,1)

• Overall: 234.09, CPU: 198.42
• Memory: 474.51
• Graphics: 379.61

MacBook Air, Late 2010, with 4 Gig of memory and a SDD (MacBookAir3,2)

• Overall: 126.07
• CPU: 149.17
• Memory: 198.90
• Graphics: 159.94

Macbook Air, Late 2011, with 4 Gig of memory and a SDD (MacBookAir4,2)

• Overall: 199.85
• CPU: 205.25
• Memory: 508.89
• Graphics: 316.38

I know, you want to know the units, and I don't know them. But still you can see remarkably that the brand new MacBook Air is almost as performant as the huge towering Mac Pro, Pretty amazing and telling.