Yesterday was a great day for most Apple product line (except maybe MacPro for getting measly update, or iMac and MacMini which had to wait a little longer for updates) But I wondered for some time, why would Apple get Retina Display only for 15" MBP? I mean Retina Display is not really really expensive, the new iPad could have it without any price increase? So why not share the same love for 13" MBP or even MBA lines? IMO, Apple is trying to protect iPad for being cannibalized to the portable Macbook, especially MBA. Many people ask over and over "Should I get an iPad or MBA ?" Well I must admit, the most overwhelming upgrade of the new iPad is the display. Who cares about A5X and extra RAM? iPad 2 still good enough for most apps, contents ... And ironically yet still bad enough for real computer apps. But main selling point is Retina Display, and so did Apple repeat the history with 15" Retina MBP. If Apple indeed implement RD to 13" MBP and all new MBA lines, it would kill the iPad charm. I mean why would you get an iPad while MBA share the same crispness? It's equally portable, fun to use, and MBA has keyboard included Maybe it's LTE chip? Well 3G/4G USB modem is not that expensive, and you can always tether your phone for that purpose. And also not to mention MBA is a "real" computer that can do the job done .. quick and fast .. It has Angry Birds and Cut The Rope just as an iPad has if you count in the fun factor.. It can run fully functional Office, iWork, Photoshop and all. So iPad would lose all its charm ... I think that's why. So .. how about you? What do you think Apple didn't sell RD MBA or 13" MBP?