Hi Firey Vixxen, not stupid at all!!
I looked on Amy's decrease videos page
and it has that they are not the same...
"This twists the stitches around and consequently tends to zig zag like crazy. It's not a great match for k2tog, clearly, but can be used decoratively."
You may try SKP and see if you like it better (slip one, Knit one, pass the slipped st over)
After you finish these mitts, I bet you will be a lot faster with the decrease...I hope you keep going