100% skill
Once you are able to see beyond the micro results (1 MTT at a time) and view the big picture, you are able to transcend the illusion of luck.
"Luck" is just a word we agreed to use for short term variations in probability distribution. If I agree to go allin in a spot I win 80% of the time versus a different spot where I only win 40% of the time, I have used skillful means to put myself in the best position to win. The outcome doesn't matter, I used my skill to increase my ROI/win probability. Luck is literally an illusion of separating events into tiny segments.
Here is another example: Let's say I have a 2 friends who like to gamble on flipping a coin (heads or tails). Friend A will give me 1:1
odds on the coin flip (the true even odds), while Friend B will give me 2:1 odds (he's a crazy gambler!). If I choose to flip with friend A, a $10 bet will net me $10 in profit (if I win), while a flip with Friend B of that same $10 will net me $20 in profit (if I win). My skill rests is choosing the correct friend to flip with (obviously Friend B) and allowing the results to be (I've used skillful means to put myself in a long term profitable situation). Whether or not I win the flip is irrelevant, the "luck" is only an illusion of viewing the situation as 1 specific flip. In reality, I'm actually quite "lucky" to have a friend willing to give me 2:1 odds on a coinflip.
So back to poker, if we lose an 80/20 to get KO'd in an MTT we could tell ourselves we were "lucky" to have someone at the table willing to take a spot with terrible
equity against us. The more and more this happens, the "luckier" we are!