Just a thought (essay?) about "easier".
One way to look at games of skill with random elements is how lucky does one have to be to win.
First, let's talk about skill using golf as an example. The best golfers, even Tiger at the top of his game, have to play better than their average score to win a major.
I saw the numbers a few years back, and I think Tiger needed to shave 1 or 2 strokes of his game to win a major on average. At that time Tiger had the lowest average of all the players, so the next guy, let's say Phil, had to shave 3 strokes off to win on average.
In pinball on a game where each successful shot returns to a flipper even the best player will miss eventually. But the person who is more accurate will win more often. Let's call that person KME. So that's the skill side.
The more random a machine is the more luck plays a factor. So a game that is 100% random gives me the best chance of beating KME since any amount of skill will help him relative to me.
To bring this around to "easier". The luck factor now removes some amount of skill from the game. This means that it is easier to win for any player below the top player. The further down the skill curve you are the more the luck helps you out since it is potentially negating a bigger skill gap. Thus games with more luck favor those with less skill and therefore a tournament with more random machines is easier for everyone except the top player. In fact, the lower you are in skill relative to the rest of the field the more you are helped.
I'm willing to play dollar games of coin flipping with anyone ranked in the top 50.