This is not to scale. Microsoft has drawn a 10.1 inch tablet 36% larger than a 9.7 inch tablet (140x78 pixels vs 102x79). This is so far off you can visually see it's wrong.
The iPad has a screen area of 45.16 square inches, which I double checked with a calculator.
The ASUS VivoTab Smart has a screen area of 43.56 square inches. That's right, the ASUS screen is smaller than the iPad's.
The iPad screen is 7.76 by 5.82 inches. The ASUS screen is 8.8 by 4.95 inches. ASUS is larger in one direction but smaller in the other direction, and has 3.55% less area than the iPad, not 36% more as Microsoft depicts.
How can the screen with a larger diagonal measurement be smaller? Because it's a different shape. Long and thin gets you a bigger diagonal but a smaller screen, for the same diagonal inches.
At the bottom, Microsoft writes, "The ASUS VivoTab Smart is lighter than the iPad, has a bigger touchscreen...". False. It does not have a "bigger touchscreen".
Microsoft's advertising is dishonest. Twice in one ad.
I got the link from Daring Fireball.
EDIT: Changed text to say "square inches".
EDIT 2: Microsoft changed the webpage within 13 hours after I posted.