I am talking about camera burst speed, not card read speed, Canon already state it clearly on the specs sheet,
What I was measuring here, albeit not super scientifically or accurately, is how long does it take to clear the full buffer of the 70D with 5 different SD cards.
Tongki has missed the point, I think the title of the thread makes it pretty clear.
I don't think you get it unless you've been in the situation where you've been snapping away and then start cursing because the buffer is taking an eternity to clear.
When I saw Gabe's results I instantly assumed that the Sony/Sandisk differences were because Sandisk label their cards with write speeds and Sony with read speeds (and that Sony's write speeds were slower).