Heh, yeah, that's a card manufacturer recommending which card you should use. I wouldn't put much weight in it.
First off, the speed has absolutely no impact on image quality. It doesn't impact anything but the speed at which your camera writes image to it, and the speed at which your computer reads it from it.
Any card you look at will be quick enough to shoot video. So don't worry about that.
As to stills, here's a basic look at what happens. When you shoot a bunch of photos real quick your camera stores them in a buffer allowing it to shoot more photos. Simultaneously your camera is writing files from the buffer to the SD card. If the buffer fills up the camera stops shooting until enough room is made for another shot. At this point the speed of continuous shoot will depend on how fast your camera is writing to the card.
If you shoot jpg this most likely won't be any problem. Most cameras can rattle off a lot (20 - 30+) of jpgs before the buffer gets full. Some are fast enough it never fills the buffer. If you shoot RAW the files are much bigger and you stand more of a chance of filling the buffer.
But still you have to ask, how often are you shooting 10+ photos continuously. Even then the difference in capture rate once you hit the buffer limit isn't going to be much different based on your card - from a practical standpoint. If you camera is capturing 2.6 frames per second instead of 2.8, are you going to notice?
