I find it kind of funny from my personal POV. I'll explain why...
While too late for the April figures, in early May I finally saved my pennies and bought a 15" MBP. But, that's not what makes it so funny. What does is the following
My wife recently lost her old-but-usable HP laptop in a coffee-related incident. When we went out to get her a replacement, she emphatically told me "I don't want you to interfere this time - this is my decision" (I'm a sysadmin, she's decidedly not a geek of any sort, I maintain all the household computer gear, but okay... let her have her way.)
She wanted another Windows-based laptop. So, we go to the mall to two different big-name computer stores (my first suggestion of Newegg was summarily ignored.)
Nothing but Windows 8 machinery as far as the eye can see at the first store... At first she says "ooh, pretty!", but five minutes after trying one, she finds herself thoroughly disgusted with Windows 8. Hates it to the core of her very being. She asks the sales-critter if there are any Windows 7 laptops to be had. The answer was "I'm sorry, but no one sells Windows 7 laptops anymore" (my semi-subtle *cough*bullsh!t*cough* response only got me a dirty look from both her and the sales-critter, and I was gently reminded by the missus --again-- that I was not to interfere.) She smiles at the sales-critter and says "I'll try the other stores. Thank you."
We go to store #2, same results. This time, I bust in and suggest that maybe we could buy a laptop and put Windows 7 on it. The sales critter in this case responded with the biggest line of - well, he said "no, it wouldn't be compatible. You have to buy Windows 8." I nearly bit my tongue in half while keeping "you lying sack of..." from escaping. My wife's response: "But Windows 8 sucks! I want Windows 7." The sales-critter responds with a rather arrogant discussion of how even a toddler could figure out how to use Windows 8, how it was oh-so-wonderful to use, how she really should try harder to like it, and...
...my wife exploded. You just don't tell a 6' 2" Army veteran that a toddler can out-do her on a computer - she focused on nothing else he said. She called the sales-critter a few names I'd rather not reprint here, and stormed out of the store, nearly shouting that she was on her way to the Apple Store, and how she could install Windows 7 on a "Mac Laptop", etc. I just smiled at the sales-critter, said "damn - that was a ton of money on the table, dude", then I followed the path the missus took.
She cools down, then finally gives in and asks me to help directly. I gently walked her to the Apple store, and explain that yes, you can put Windows 7 on one if you want to. We find a free sales lady, and the two started looking at MBPs. This time I hang back and just watch - no need for me to answer any tech questions. My missus then says something about ithe MBP being too pricey for just surfing the web and doing facebook/email/etc, but she wanted something powerful enough to run Dragon (speech-to-text thingy she uses). The sales lady then said "well why not try out an iPad with the Pages app and Text-To-Speech - I can show you how it works if you'd like, then we can go from there." She shows the missus how it works, explains that a wireless keyboard can be used for typing, and how the thing is uber-portable. The missus plays with it for a bit and falls in love with the thing. An hour later, we walk to the car with a 32gb Wifi iPad, a bluetooth keyboard, and a nice case to hold the thing.
It's been almost a month, and she's never looked back - she uses the iPad for everything now.
So - how does this relate to sales numbers? Well, it's anecdotal sure, but it illustrates exactly why Munster is kind of right... Most folks don't need a laptop for what they do (let alone a fire-breather like the MBP which I crammed to the rafters with RAM and disk). A tablet works for a huge chunk of use cases in the consumer realm - perhaps not the majority, but certainly enough to make a very noticeable dent in the sales of desktops and laptops.
To top it off, the sheer ease with which my missus took to the iPad illustrates why most folks emphatically do not want to waste a ton of time learning a whole new OS paradigm on their desk/laptop just to hit facebook, read email, or play an occasional game.