Oh I am sure 50% of them if not more are.. you don't just need Luck at this stage, you need Luck, Luck, Luck, Luck..
I'd say the deeper you go, the more skill it takes. At the start of MTT's (especially low buyins) a lot of player mindsets are pretty much "all in and if I get lucky I'll start to play", however when you get deeper, you realise that you actually could win some cash and start playing.
But anyways, I'm more of a cash game player myself. Only occasional tourneys.